Mixed Review
What are the names of the other two math teachers in 8th grade?
Groninger
Schildmier
Wood
6 = − w — 8
w = -14
1/2(x-4)-2=4
x = 16
14 = -12+x
x=26
John is 10 years older than Chris. In two years John will be twice as old as Chris. How old are they now?
John= 10
Chris= 4
What are the first 3 digits of pi?
3.14
7x = 35
x = 5
-3(2x-3) +2x = 45
x = -9
x - 15 = 3
x= 18
A number tripled and then decreased by 5 equals 5 more than double the number. What is the number?
10
What do you call an angle that is more than 90 degrees and less than 180 degrees?
Supplementary Angles
A machine prints 230 movie posters each hour. How many hours does it take the machine to print 1265 posters?
5.5 hours
8x+2+4x=2(6x+1)
Infinitely Many Solutions
3(x-4)=10
x= 22/3
The sum of a number and two-thirds the number is the same as 4 less than twice the number. What is the number?
12
What do all three angles of a triangle add up to?
180 degrees
You clean a community park for 6.5 hours. You earn $42.25. How much do you earn per hour?
$6.50
10-2(3x-1)=6x+10
x = 1/6
2x+4= -(-7x+6)
x = 2
The product of 5 and 2 less than triple a number equals the product of 7 and 8 more than twice the number. What is the number?
66
Who came up with the Pythagorean Theorem?
Pythagoras
-9(a-4) = -5(a-4)
a = 4
4(7x+1) = -220
x = -8
5.5-x = -4.5-x
No Solution
A coupon subtracts $17.95 from the price p of a pair of headphones. You pay $71.80 for the headphones after using the coupon. What was the original price of the headphones?
p= $89.75