ALEKS
Area of a parallelogram
A = BH
2/-9 + 5/4 2/-9 --_> -2/9 2/(-5) becomes what
-2/5
3x^2- 12x + 11 write in a(x-h)^2+k
3(x^2-4x+4)+11 3(x^2 - 4x +4 ) + 11 -12 3(x^2 - 4x + 4) -1 3(x-2)^2 -1 vertex is 2, -1
4x^3x^-7 * 2u^-6w^3 * 8wu^5 add exponents up since you are multiplying negative exponents on bottom answer :
64w^4/x^4u
SA cylinder formula
A = (pi)(r^2)+ (pi)(r^2)+ 2(pi)(r)(h)
area of triangle
A=1/2bh
Area of a parallelogram
A=bh
Area of a circle formula circumference of a circle is
A=πr² C= πd
Calculate the distance between the points G = (2,−2) and F = (9,−6) in the coordinate plane. Give an exact answer (not a decimal approximation).
D = square root of (x2-x1)^2 + (y2-y1)^2
Graph the inequality in the coordinate plane. y>4 so graph it HORIZONTALLY since it is > the line will be ________ IF ITS greater than or equal to the line will be ____
DOTTED solid
T = {(-2,-8),(-5,-6)(-2,3)} what is domain/ range domain: {-2, -5} range : {-8, -6, 3) write them all out
all
graph the inequality -4x-3y < 12
rearrange to y> (-4/3)x - 4 since y is GREATER THAN shade above the line make sure the line is dotted
slope of a parallel line is the __ as regular slope slope of perpendicular line: flip the ___ and the _____
same sign, slope
log(7) 1/7 = ? 7^x= 1/7 x = ?
x = -1
A Web music store offers two versions of a popular song. The size of the standard version is 2.5 megabytes (MB). The size of the high-quality version is 4.4 MB. Yesterday, there were 660 downloads of the song, for a total download size of 2068 MB. How many downloads of the standard version were there?
x+y=660 2.5x+4.4y=2068 solving for x 2.5x+4.4(660-x)=2068 -1.9x+2904=2068
|2u+10| = 4 since it is greater than 0 |2u+10| = 4 and |2u+10|=-4
answer is -3, -7
Find all values of x that are NOT in the domain of f. If there is more than one value, separate them with commas. f(x) = x+2/x^2+3x-4
factor the denominator and solve (x+4)(x-1)=0 the answer is 1 and -4
4√243 1. write all powers of 4 4√81 x 3 4√3^4 x 3 3X square root of 4 x 3
3X square root of 4 x 3
it is NOT a function if x is repeated more than ____ NOT a function if it fails the ___ test
once vertical line test(can't intersect more than once)
A line passes through the point −−3, 7 and has a slope of 2 Write an equation for this line. Y=MX+B m=2 it is the slope plug x and y in
y=2x-1
The height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. When graphed, the function gives a line with a slope of −0.4 Suppose that the height of the candle after 12 hours is 22.2 centimeters. What was the height of the candle after 9 hours?
12-9=3 3x slope(-0.4)= -1.2 since it is 9 hours and the candle should be longer, add it to 22.2 22.2 + 1.2 = 23.4
Convert 9π/4 radians to degree measure. Multiply by
180/π
Calculate the distance between the points c=, (2,−2) and p=( 7,−6) in the coordinate plane. Give an exact answer (not a decimal approximation). d= square root of: (x2-x1)^2 + (y2-y1)^2 answer is the square root of ____
41
The credit remaining on a phone card (in dollars) is a linear function of the total calling time made with the card (in minutes). The remaining credit after 45 minutes of calls is $22.80 and the remaining credit after 67 minutes of calls is $19.28. What is the remaining credit after 76 minutes of calls? answer is
ANSR - 17.84 22.8-19.28/67-45 times this by (76-67) subtract that number from 19.28
rewrite as an exponential equation LOG2(1/2) = -1
LOG2(1/2) = -1 log aC=b if a^b=c answer is 2^-1=1/2
So to convert 90° to radians, we multiply by______ .
π/180