math sat
how to find slope on a graph
find two point visible on the graph and meet them outside the line and the points are the number it on the graph y axis and the x axis part then subtract both y axis number (on top) and x axis number on bottom the you'll get a fraction so then simplify and there your answer.
how to do 256 ∧4/7 over 2 ∧4/7
same as 256∧4/7 over 2 =128∧4/7 same as (128 ∧1/7)⁴ so find out what 7 time give you 128 and that 2 128∧1/7 =2 or ⁷√128=2 then your expression is 2⁴ = 16
what the solution for this equation 100-121k∧2=0
factor it out (10-11k) (10+11k) and if solve for k you have to divide 11 by 10 answer is k= -10/11 and k=10/11
how to convert decimal to mix fraction example 12.98
put 12 to the side a convert .98 to a fraction which will be 98/100 because 8 is in the hundredths place the it 12 98/100
simplify √180 ×√½
same things as √180 × ½ so you multiply 180 times ½ and you get √90 and simplify again √9*10 which is 3√10 and that your answer!
what to do if you have a problem like this (4^⁻3×2^⁻3)^0
since there not the same base multiply the 4 and the 2 and you'll get( 8∧⁻3)^0 multiply 3 times zero which is 0 then a number is to the power of zero it's always 1 so your answer would be 1.;)
how to do this (2x-3)(x+4)
since you have a quartic equation where A+b=0 we know 2x-3=0 or 4+x=0 if you were solving the equation you get x=3/2 and x=-4 we then have -3/2 + 4 then find the common denominator 3/2 - 8/2 gives you 5/2
simplify -√40 + √90
so it basically -√4 * 10 and 4 is a prefect square and √9*10 and 9 is a prefect square then simplify so it would be -2√10 and 3√10 and than add them and you get 1√10
what does soh cah toa mean
soh: sign is opposite over hypotenuse cah; is cosign is adjacent over hypotenuse . toa is tangent is opposite over adjacent.
perimeter of square and area of square
perimeter: add all the sides area : base * hight
perimeter and area of rectangle
perimeter: add all the sides area: is base * hight
what to do when have a negative plus a negative example : -1+-5
you add and keep negative sign example is -6
a new computer cost $600 the sales tax is 9% how much is the computer with added tax
$600 * 0.07 = 42 600 + 42 =642
factor this polynomial x^2-x-6
(x-3)(x+2)
what if you have a negative number minus a natural number. example -4-7
-11 add them and then add a negative sign
what does a positive plus and negative give you example 5 + (-7)
-2
subtract smaller number from bigger number example 3-5 you will get...
-2 what you do is subtract them normally but add a negative sign.
if someone ask you to write 0.46280999 in the third
0.463 count to what they say a round if number is higher then five to the number the to the place they ask for number
(3xy)(-2x∧2 y ∧3) how would you add them
-6x∧3 y∧4
whats 10 ×10 and whats and number example 15 times 100 and whats a number times 1000 example 4. what 100 ×100
1) 100 2)1500 basically for this one just add two zero to the number.3)4000 basically add 3 zero and the number. 4) 10000 (ten thousand)
ok 1) (-1) to the exponent 0 and 2) (-1) to exponent of 1 and 3) (-1) and a exponent of 2
1) because anything to the power of 0 is is one 2) do -1 ×1 give you -1 3) -1 ×-1 = 1 take negative one to an odd power get (-1) and take -1 to an even power you get 1 positive
how to do long division
1) divide 2) multiply 3) subtract 4) bring down if you have a zero above your going to need to multiply and do the normal stuff right after you bring down your start with steps 1)
what if you have a negative minus a negative -2- (- 3)
1, subtract normally and take away negative sign basically have to negative touching each other the answers is going to positive.
how much is a dime worth nickel quater
10 cents 5 cents 25 cents
10 1/2 can be also written or any number with 1/2 can written as
10.5
10 ×10 = .....
100
20 * 5 gives you.....
100
50 ×2 gives you......
100
what 25×5
125
64 ×2
128
what are the zeros of this equation 2(x+55) (x-17)
17,-55 not 2
rewrite 5/14 as a mix number
2 4/5
a quater percent, fraction,decimal
25%, 1/4 , 0.25
what the coefficient of 3x∧2 what about ........ what the coefficient of 7
3 is the coefficient think of 7x∧0 which would be one so 7 is consider a coefficient
what if you have a negative number plus a positive number -3+6
3 just subtract if was -6 + 3 it would be -3
300/200 is.....
3/2 or 1.5
what the same as or equivalent to 4b
3b + b
how to do this problem (-8a∧2)(-5a∧6)
40a∧8
approximate square root of 45 to the hundredths place how to do problems that are not prefect square/ approximating the square root
45 is not a perfect square so look at the perfect square close to it, which are √49, which is 7 and √36 which is 6. 45 is closer to 49 ,4 away difference and 13 in distance in total from 36 to 49. the distance from from 36 to 45 is nine so it like 9/13 cause it 9 way through to 49 if start at 36 you can guess like 6.7 a way to find out is to way to do that is multiply 6.7 times 6.7 which gives you 44.89 close to 45 but not that close then add more try "higher"number 6.71 multiply the two which gives you 45. 0241 which is closer so 6.71 is the answer or the square root cause 45.0241 is closer then 44.89. need more go to khan academy so 6.71 square (the little two on top meaning 6.71 times 6.71) = 45.0
factor 4y∧2+4y-15 in two binomial expression
4y∧2 -6y+10y -15 ↑ that equals 4 know group the terms 4y∧2-6y+10y-15 group↑ and then you group↑ common factor of two y 2y(2y -3) +5(2y-3) then factor it even more to (2y-3) (2y-5) already had a 2y minus 3 just need to count the five and the 2y outside the parentheses .
how to simplify 4√5a⁴b¹²
4√5a⁴b¹² (5a⁴b¹²)∧¼ 5∧¼(a⁴)∧¼ ×(b¹²)∧¼ a b³ ⁴√5
how to convert 58/10 into an improper fraction
5 ten make 50 then there 8 left so 5 8/10 and then simplify ! 5 4/5
what if you have a positive number minus a negative number 2-(-3)
5, add them a get rid of the negative
a half in percent/fraction/decimal
50%, 1/2, 0.05
120 ÷ 2 gives......you
60
which place is each number in 14,897
7 ones , 9 tens , 8 hundreds , 4 thousands , and 1 ten thousands
area of triangle
A= h *b/2
pythagorean theorem
A∧2 +B∧2 =C∧2 C is always the hypotenuse remember this formula only apply to right triangles remember to do the reverse of the exponent is to square it so example x∧2 +24∧2= 26∧2 x∧2+576 =676 x∧2=676∧2-576∧2 x∧2=100 √100 x=10
if the price of an item increases from 70 dollars to 84 what the precent increase.
Frist, 84-70=14 then do 14÷70 ×100=20% this would be the way you find increase or decrease in percent problems. percent change = amount of change (over) original amount times 100
any easier way to convert decimals to fractions
LOOK at the place values example 9.58 the 8 is in the hundredths place so it 958 divide by 100 so it basically 958/100 then simplify which will be 49/50
what about..... (-2xy∧2) (3x∧4)
answer -6x∧5 y∧2 five x because one x to left and there where four the 2 belong to y not y and x or x.
what does y=mx + b mean
The meaning of slope and y intercept. in the context of word problems. in the equation of a straight line (when the equation of straight line or when equation is written as y=mx+b m is that multiply by x and b is the y intercept , where the line crosses the x axis. ex 3x your run is one and you go up three
how to solve this y-10 3z over 14z² × 10-y
answer 3 - over 14z factor it out then cross out the y-10s (10 -y) * 3*z 14*z*z -1(y-10) and left with above answer
volume of a cylinder is
V =πr∧2h
what is a radical
a radical is the √ symbol
scalene triangle
a triangle in which no sides are the same length
right triangle angle
a triangle that has a right 90 angle
isosceles triangle
a triangle that has two sides of the same length
whenever adding exponents of the same BASE( the same the number on the bottom) you can always ...... and if it was 2 ^ 10/2^5
add the exponents you subtract the exponents 2 ^ 5
equilateral triangles
all triangle in which all three sides are the same length and the three angles are 60.
what arc measure and arc length
arc mesure and length are two different things the measure is the center angle that intercept the arc for axample AB measure is 120°. and what the major arc for instance ABC it would be the whole angle of circle which is 360 minus the 120. abc arc of 240° more proper definition of arc is measure of central angle that intercepts are. arc length the arc measure plus the actually length of the ircle
Pythagorean theorem
a²+b²=c² c is the hypothenuse
how to do this problem -√1/44 - √1/99
basically do everything normally except it be √-1/2/11 and 1/3√11 then for the fraction subtract by doing so you have to find a find a common denominator which is 6 and five on top cause you subtracted and then your answers is -5/6×√1/11 not sure way multiply at the end but that what the answer had
what to do with an negative exponent ex 2 -4 (pretend the four on top and small basically four is the exponent )
basically do one over 2 4 times and multiply and you will get 1 over 16
what horizontal what vertical
basically flat ←→ that horizontal vrtical is ↓↑ is that way
what if you had 8 and 1/3 as the exponent what if you had 27 and - 1/3 as the exponent what do you do
basically is 3 square root of 8 basically asking what number three times get you 8 and that two answers is two do one 27 and the exponent of 1/3 and then what number three times gives you 27 and it 3. three this three time three give you 27 so it 1 over 3 is your answer
how to do this 8 2/3 as an exponent
basically it (8 exponent of 2) 1/3 exponent or the 1/3 reverse with the 2 frist way you get 64 1/3 exponent so what three times give you 64 it 4.
how to write fraction to percent 7/10
basically it's 7 ÷10 so think of it as 7.there one zero move decimal place by one always put decimal in back of number and move it depending on the zero. basically i think your moving to left cause dividing.
what if you have (3 -1) -1 is the exponent and and on top is -2 as an exponent what do you do
basically multiply -1 times -2 you get 2 so two would be the exponent so the answer would be 9
what to do if it a negative number to a negative exponent -2 -3 (pretend the negative is a exponent) what if you had (5/8) and -2 as the exponent
basically same except you do one over -2 three times and you will get (-1 / 8 ) the negative is negative of the full fraction one over (5/8) 2 as exponent you get 1 over (25/68) then flip 68 over 25 get (68/25) you can think of it as (8/2) to positive exponent of 2
what are square roots
basically the one number multiply by the same number give you that number in the square and that one number is the square root
how to multiply this polynomial 2x(4x-5)
basically your doing disturbed property 8x∧2 -10x
what the value of the expression 2∧3√4 * 2∧3√2
both of them multiply gives you 4∧3√8 therefore the value is 8 your answer is 8
some important equation about circle
c=πd circumference equal the pi time the diameter or c=π2r or 2πr the circumference equals pi and radius times two.
how to convert fraction to a decimal
dived top by bottom
how to convert fraction to percent
divid the top by the bottom and the multiply by 100
how to solve -18 ≥ 6-12ax
divide the whole left side and right side by 6 answer is -3≥6-2ax
ok ......... if your dividing by 0.5 (half) you do what if your multiplying by 0.5 you do what
divide your multiply by 2 multiply your divide by 2
how to find percent of a number example 30% of 6 two (ways)
do 0.30 × 6 which equal 1.8 basically to get 30 to 0.30 you covert percent to decimal and then multiply. in my opinion this is easier.
do 6 ÷28/9
do 6 × 9/28 = 54/28
simplify (7x+10)∧2
do NOT do (7x∧)2+(10)∧2 WRONG WHAT YOU NEEED TO DO IS ...... (7x +10)(7x+10) it's 7x plus 10 twice it can (7x)∧2 + 2(7x)(10) +10∧2 please note that it 7x∧2 cause multiplying by the two 7x in addition you have to it the product of 7x and 10 which is 70 and then another 70 which added together is 140 the answer is 49x∧2 +140x+ 100
how to multiply binomials and polynomials ( a shorter way ) example (3x+2)(9x∧2-6x+4 )
do it as if you were multiply normal numbers 9x∧2-6x+4 3x+2 which gives you 27x∧3 +8 line up like terms
add (-2x+4x-12)+(7x+x∧2)
do remember if you have a SUBTRACTION sign you have to distribute the subtraction sign. answer -1x+11x -12
how to add and subtract fraction with unlike denominators
first find a common denominators something that the two denominators both go in too then multiply the top number by the number you divide by in the bottom to get your bottom number basically the the number on the bottom left multiply by number the number on top right and vis versa. then add or subtract the top depending or sign. the bottom you don't add or subtract they the the same number. then simplify.
pentagon
five side and five angles
to find slope easy clear explanation
for the x count the boxes y count the boxes make a boxes like shape when connecting both of the points and your change in y will always be on top of your change in x. also your counting from the two point that are clearly on line
quadrilateral
four sided figure
how to convert decimal to fraction
frist : put decimal on top of one in fraction ,two: multiply top and bottom by a hundred then simplify the fraction basically it get rid of decimal
finding amount after percent change If 20% tip is left on a restaurant bill 0f 80 dollars , then to find the total amount of the bill including the tip.
frist find the amount of tip 80×0.20=16 add tip to bill 80 + 16 =$96
which is bigger 2/3 or 3/5
frist frist find common denominator which is 15 second multiply like you would for a addition problem give to 10/15(2/3) and 9/15(3/5) so 2/3 is bigger.
how to make negative mix fraction into a an improper fraction example -3 4/5
frist multiply denominator by the whole number and then add the nominator even if have a negative and you want to subtract still add and keep negative sign.example : -19/5
simplify 3a (a∧5 )(a∧2)
frist start with the a's with the exponents ,since they have the same base you can just add them so you'll then get a^7. now for the other a you can do the same thing duly noted that a is a^1 so you add the 7 plus 1 which =8 so the answer is 3a^8
how to do 2 ∧3x+5 = 64 ∧ x-7
frist they need to have the same base so note have same base and 2∧6 equal 64 2∧3x + 5 = 2∧6 ∧x-7 and you multiply 6 times x-7 which get you 6x-42 then 2∧3x+5=6x-42 x is equal to 47/3
p(x) =x∧5+9x∧3-2x∧3-18x what are the real roots how many times does it intercept the x axis smallest y intercept
frist you can factor an x x(x∧4+9x∧2-2x∧2-18)=0 x(x∧2(x∧2+9)-2(x∧2+9) x(x∧2+9)(x∧2-2) x(x∧2+9)(x+√2)(x-√2) =0 ↑ not equal to zero but the square roots are ↑ and that x equal zero so the three times it intercept the x axis, has three zero and -√2 is the smallest
what the place value of 8 in 2,894
hundreds stat from the right to the left
9x-14y=-3 2x-ay=-6 what will answer for (a) that make the liner equation have no solution.
if lines parallel there never going to intercept and have no solution what make them line parallel? same slope but different y intercepts write them in slope intercept form y= mx +b 9x-14y=-3 subtract 9x both side then divide by 14 and you get y=9/14x+3/14 then do 2x-ay=-6 subtract 2x form both sides and you get then divide by negative a which gives you y=2/a x + 6/a 9/14=2/a solve algebraically get a=28/9
how to divide with decimals
if the number on the outside is not a whole number move the decimal in side the same as outside then move the decimal to the right to make it a whole number then divide as usual then put decimal on top in same spot the inside was.
what the thing when adding and subtracting negatives
if there to like like sign it become a plus ex (++) (--) the number may not be if there to differtnt sign you subtract (-+) (+-)
how to do x∧2 - 8x + 7 =0
if you factor it out you'll get (x -7) (x-1) since equation is true both equation equal zero cause x-7=0 x-1=0 has to be positive and same number so there 7 and 1 (positive)
finding an original amount after a percent change example problem: a pair of tennis shoes cost $48.60 including sales tax. if the sales tax is 8%, what is the cost of the tennis shoes before the tax is added.
if you know the number that results after a given number is increased by p%, you can find the original number by dividing the new number by total percentage. original a mount = new amount after an increase of p% over 100% +p% can do the same if given number is decrease by percent and want to find the original amount original amount = new amount after a decrease p% (over) 100%-p% 48.60 over 8 + 100 48.60 over 108 change to percent 1.08 answer is $45
1,345,365.1427 what the place value of each number ?
in order from left to right. millions, hundred thousands,ten thousand,thousands, hundreds tens ones. tenths ,hundredths ,thousandths tenthousandths
when have quadratic
is just a second degree polynomial a polynomial with a variable rise to the second degree
any thing to the power of zero is what
is one
how to do a problem like this p(x)=(x+7)(x-10) given the polynomial above what are it's zero
it a multiply choice but basically there asking what x is to make this equation equal zero. if you put -7 in x and positive 10 it would equal zero so your answer is -7 and 10.
stuff like when people say it 2/3 of the population it means ....
it a ratio fraction are ratios. so more than half of something i think 2/3 also 2/3 is 66%
if you have (3×8)^2 how would you solve that
it basically 3^2 × 8^2
what the square root of √121
it's 11
what is the least common multiply of 4 and 5
it's 20 the least common multiply is the smallest number multiply by two number given in this case 4 and 5
diagonal
joining to opposite conner of of square or any right sided shape
how to multiply numbers by one million or thousand
just add the 6 zero in million and thousand is three zero to the number example even if you only multiplying hunderds double digit and single digit example 666 * 1000 =666,000 66*1000=66,000 6*1000=6000
if had to graph y=2x +7
just apply any value to x example if x is 2 then it be 2(2) + 7= 8 y=8 please remember that x go first (x,y)
area formula for square
length times width (L × W)=A
how to subtract with decimals
line up decimals and subtract and then put in decimal
how to add with decimals
line up the decimal and add and then put in decimal point
parallel
lines that do not meet. two lines in the same plane that do not intercect or touch
what are binomial
mathematical expression with two variables example: 3x + 5, x^2 - y^2, 3x + 4x
how to convert percent to decimal
move decimal two places to the left example 75% 0.75
how to convert decimal to percent
move decimal two places to the right example 0.83 83%
2 + √2 over 2-√2
multiply 2 + √2 to both side get 6 +4 √2 over 2 then divide 3+2√2
how to multiply with decimal point
multiply normally then put the decimal the number will places as the two number combined example 0.03×1.1=0.033
what does it mean when equation has on solution or has infinity solution
no solution hard to explain but it when 2= 7 when it suppose to be x=7 and infinity solution is when you get an 6=6 that is infinity solution.
8x∧2 is called
non zero coefficient
what equivalent to this expression (64/b∧27)∧2/3
note that (x/y )∧m =x∧m over y∧m y ≠ 0 64∧-2/3 over (b∧27)^ -2/3 flip cause negative fraction exponent (b^27)^ -2/3 over 64 ^27 then do 27 * 2/3 = b^18 over 64^ 2/3 ( 3√ 64 )^2 what three times give you 64 4 so 4^2 b∧18 over 16
what are improper
numerator (top) is bigger then denominator (bottom)
what a controlled experiment , observation studies , and a sample survey what a census
obser it studies subject without assigning treatment to them. controlled : separate subject one in controlled other not then observer the treatment in experimental group. sample survey is a study that get info from a population usually through question and interview. a census : a study which data is collected by every member in a population.
what are the exponents of 7 and -8x
ok 7 is basically 7x∧0 so the exponent is zero and -8x the exponent is one
how to find percent of a number example 30% of 6 (two ways)
ok do 30 over a hundred times six over one which gives you 180 0ver 100 simplify then gives you 9 over 5 or 1 then 4 over 5. then divide four by 5 get .8 then add the one which gives you 1.8
ok when doing a problem like this (2x+8)(2x-8) how you do it and how do you the disturbed property also use (a+b)(a-b)
ok so it like ( a + b)(a-b) ↑ this entire thing is multiple by the a-b a(a+b) -b(a+b) a∧2 + ab -ab -b∧2 cross ab out and you got a∧2-b∧2 know to apply that to these problem 2x(2x+8) -8(2x+8) 4x∧2+16x -16x -64 4x∧2 -64 16x cancel out cause minus each other
how to do a problem like this the polynomial p(x) has 4 distant zero which graph could represent y=p(x)
ok, you don't have grapes to look at but it basically the line goes touches the x axis four times. so look for the graph where line goes touches the x axis four times.
factor x∧2-49y how to do 45x∧2-125
sooo (x+7y)(x-7y) so if there a minus we know it's (a∧2+b∧2) (a∧2-b∧2) we know 5 is a factor of both 125 and 45 so 5(9x∧2-25 ) nine is prefect square and so is 25 so5(3x+5)(3x-5)
find the slope of the line pair that goes through the order pair ( 4,2) and (-3,16)
starting 4,2 ok to find change -3-4 =7 (think if you had to count on a number line) change in x is -7 end -3, 16 and to find change in y 16-2=14 so 14 equal change in y so it 14 over -7 simplify and get -2 the two tell you how must you increase but in this case decrease if you want to calculate the change in y and x without having to think of number line just subtract bottom by the top. Also it does not matter which one is ending and which one is starting.
what do they mean sum product quotient differences
sum, add, when you add to number the sum is the answer product answer for multiplication the answers for division difference is the answer for a subtraction problem
if you divide by a negative what do you with the inequality ? (≤≥><)
swap it
what does slope mean
telling you how steep a line is slope is equal to change in y over change in x will be a constant y rise over is the same as over x run also the change in the dependent variable over change in independent
circle arc
that an arc
when your subtracting fraction you line up the number to the left example 2.5 minus 2
the 2 go in the 2 slot
what are the coefficient of 4x∧4 - 8
the 4 is the coefficient the coefficient will always be the variable attracted to the x
what is a coefficient
the big number example 4x the four is the coefficient
what are constant and what are variables in this polynomial .................:] 3x∧4+ 2x∧3 +7
the constant is 7 and the variables are 3 and 2
what the diameter of a circle
the distance along the widest point. also keep in mind that the diameter is equal 2 times the radius.
circumference
the distance around the circle
radius of a circle
the distance from the center to outside the edge circle all the point to the center point.
how to do 18 - 4.5
the four goes under the eight slot a pretend there a zero above the five and do the cross of thing you answer will be 13.5
what are mixed fraction ?
the fraction with number attracted (whole number) to the side
if have a whole number for slope do what
the number over 1 so the whole number will be your rise
what vertex
the point where to or more points meet
what is neat about circle
the ratio of the circumference and the diameter for EVERY circle is pi 3.14159......
what the slope of 2.5x-7
the slope is 2.5 look at y=mx+y
surface area
the sum of the area of all the flat surfaces on a three dimensional figure.
how to work out in your head to divide fraction example 11/2
think of it like you and a friend have 11 cookies you'll both get five but there one left over. You'll have to cut it in half to get the same amount which is half which also represent as 5 so answers is 5.5
what type of polynomial is this x∧2 +1
this is a second degree polynomial because the highest exponent is 2
what does is mean to round to the tenth
to keep one digit after the decimal and round it because it the tenth place
what is 20% of 2/3 of 15
turn 20% into a fraction 1/5 ×2/3 ×15=2
supplementary angles
two angles whose sum equals 180
perpendicular
two lines meet to form a 90 degree angle
how to do this a polynomial has zero at -9,2,0
well -9,2,0 equal zero so -9+9=0 2+-2=0, 0 so 9,-2,0 (x+9) (x+-2) x = (x∧2 +7x-18)x x∧3+7x∧2-18x
26∧9x+5 = 1
well first we need to know that 9x+5 needs to be equal to zero 9x + 5= 0 -5 -5 dived 9x equal x = - 5
how to this problem ............... (x∧2-√6) (x∧2+√2)
well you'll need to distribute this entire term (x∧2-√6) to (x∧2+√2) good way to look at it (x∧2-√6)x∧2 +(x∧2-√6)√2 you'll get x∧4 - x∧2 √6 +x∧2 √2 - 12 ( not the answer) the answer is x∧4+ (√2 -√6 )x∧2 - 2√3 see here ↑ how the x∧2 is apart to both those to radicals
hey, factor x∧2 +10x+9 in to two binomials
well... (x+9)(x+1) see how you get x∧2 + 10x+9
what do you do if you have number to a power that rise to another power ex (2^10)^5
you basically have 2^10 five times and you can count add the exponents and you have 2^50 and then work out the problem basically you can multiply 10 times 5
how to simplify √128/27
well....;) 64*2 =128 9*3= 27 64 has a prefect square of 8 so 8√2 9 has square root of 3 so 3√3 so then your answer is 8√2 over 3√3 you can also write it 8 over √2 over 3 3 also the number with the prefect square for what i experience goes outside the radical sign.
inscribed angle theorem
what inscribed angle are : an angle made from point sitting on a circle circumference. d is the apex and a and b are the end points. (ignore the other stuff in the picture)
what does it mean when something intercepts the x axis and something intercepts the y axis.
when the line go through the ←→ the x axis the y intercept mean the point at which the line intercept or goes across y axis. basically when at the x intercept y is zero and when at y intercept x is zero. if were sitting on the x axis we know y is zero and x value could be anything. if were at the y axis are y value could be any thing but x is zero at the y intercept.
how to do....... identify the x and y axis of the line y=3x-9
when were at the frist solve for zero at x intercept y is equal to zero 0=3x-9 answer is 3 so (3,0) x is 3 y is 0 then solve for y y=3(0)-9 answer is -9
how to do a problem like this p(x) =2x∧3 -18x and what make the equation zero
where x is next to 18 it x will be 3 and other x is negative -3 the answer is -3 0 3 not sure why -3 is there
y=3x x=3y how many solution does this equation have
with equation it helpful to think of then as lines two line intercept you well have one solution if they don't you'll have no solution and if they end up being the same line you'll have infinite number of solution. write it in y or intercept form i think y=3x is fine so but x=3y is not divide both sides by 3 and you get y=x/3 so the lines don't have the same slope there not going to be parallel and not going to be the same line so this has one solutions.
how to convert percent to fraction
write percent over 100 if percent not a whole number multiply both top and bottom by 10 for every number after the decimal place
what are roots in math
x values that make the polynomial equal to zero
what the same as ⁴√x
x1/4
which expression is equivalent x +2y +x+2 A) 2(x+y+1) B) 2x +4y+4 C) none of the above
you can rewrite that as 2x+2y+2 it not B) because there a 4y and 4 but it is A) cause the 2 times x gives you 2x and same with y and you know 2 times 1 is 2 so it A)
how do you convert to an improper fraction from a mixed number example :3 3/4
you multiply the denominator by the whole number(which the number off to the side) and add the numerator and keep the denominator that you began with. example: answer is 15/4
how to do a problem like this ((4∧11)(5)∧-5))
your answer would be 4∧44*5∧25