Add/Subtract/Multiply/Divide (Solving Equations)
4+x=2
x=-2
4t-13=57
t=17.5
4x+2=3x
x=-2
In ninth grade there are 320 students and 20 teachers. What is the student-to-teacher ratio?
16/1
Find 2.3% of 230
5.29
z-(1/4)=7/8
z=9/8
(k/5)-6=2
k=40
-(x - 4)=2x+6
x=-2/3
Solve the proportion
(3/k)=(9/15)
k=5
What percent of 18 is 12? Round to the nearest tenth.
66.7%
35=5x
x=7
4+3a-6=43
a=15
0.2(7+2t)=0.4t + 1.4
t=all real numbers
Find the unit rate.
Teresa can buy 18 golf balls for $32.99
$1.83 per golf ball
90% of what number is 120? Round to the nearest tenth.
133.3
x/(-5)=-2.6
x=13
If 8n+22=70, find the value of 3n.
18
One photo shop charges $0.36 per print. Another photo shop charges $2.52 plus $0.08 per print. Juan finds that the cost of developing his photos is the same at either shop. How many photos does Juan have to develop?
9 Photos
Convert this rate
75 ft/s to mi/min
0.85 mi/min
Find the simple interest paid for 10 years on a $10,000 loan at 9% per year.
$9,000
-4.6r=9.2
r=-2
The sum of the measures of two angles is 180 degrees. One angle measures 3a and the other angle measures 2a-25. Find a. Then find the measure of each angle.
a=41 Degrees
123 Degrees
57 Degrees
Solve for a
S=(n/2)(a+L)
a=(2S/n)-L
A tree casts a shadow that is a 14 ft long at the same time that a nearby 2-ft-tall pole casts a shadow that is 1.75 ft long. How tall is the tree?
16 ft
The original price of a shirt was $79.99. It is on sale for $49.99. What is the percent discount? Round to the nearest tenth.
37.5%