Abeka Algebra 1 Test 2
Kathryn bought an aquarium to replace her fishbowl.The directions for the aquarium says that it should be filled with 9 cubic feet of water.If the aquarium is 2 feet wide and 3 feet long,how high should the water fill the aquarium?
1.5 ft.
Mary and her father went on an all-day ride in the car.They traveled 3 times as far in the afternoon as they did in the day,they had in the morning.At the end of the day,that had traveled 420 miles.How far did they travel in the morning
105 mi.
Mr.Morgan invested $20,000 in an account earning 4.5% interested.How many years would it take for him to earn $5,400 in simple interest
6 yr.
Which of the following states that if any quantity is added to (Or subtracted from) both sides of an equation remaines true?
A. Addition property of equality
Which of the following is true about a condradiction?
A. It has no solutions
Which of the following is a solution to x + 2=11?
B. 9
4x-11=7
Conditional
x-1= -x+4
Conditional
3x -1=3x+1
Condradiction
Which of the following values would be multiplied to 0.56x - 0.98x + 0.734 = 0.43x to clear the equations of decimals?
D. 1,000
Which of the following values would be multiplied to 3/2x + -5/9x +2 to clear the equation of fractions.
D. 18
2-8x=2-8x
Identity
absolute value equation
Multiply equation by 1 and then by -1 and solve for each
3I4x+1I+10=7
No solution
For V:I=V/R
V=IR
conditional equation
an equation that has a finite number of solutions.
contradiction
an equation that is never true for any value of the variables
identity
an equation that is true for every value of the variable
h:V=1/3 S2 h
h=3V/S squared (2)
For h:V=lwh
h=V/lw
2n+5=n-7
n=-12
In class of 42 students,the number of boys is 12 fewer than twice the number.If the sum of the two numbers is 84,find the numbers.
x + 2x - 12 =42
One of the numbers os 40% more than another number.If the sum of all the two numbers is 84,find the numbers.
x +1.4x=84
5(3x+2)=7x-2
x -3/2
Mrs. Hill is 4 years older than twice her son's age.If the sum of their ages is 50, how old is her son?
x+2x+4=50
5Ix-1I-2=23
x=-4,6
I2x+1I=3
x=1,-2
3/8x+7=13
x=16
3x-(2x=7)=15
x=22
0.7x - 1.2 = 0.3x
x=3
2 1/2 x =10
x=4
For y:2x+5y=7
y=2x+7/5