Math equations
What is the equation for finding area of triangle?
A=1/2 bh
|12|+|-15|
27
What is the ratio of 12 to 16 in simplest form
8+2×3
14
A circle has a radius of 4 inches. What is the circumference?
Use π=3.14\pi = 3.14π=3.14.
25.12
What is the formula for circumference?
C=pid
5(a−3)-4
5a-11
A classroom has 12 boys and 8 girls.
What is the ratio of boys to girls?
12:8 or 3:2
12−3(2^2)+5
5
A triangle has a base of 10 cm and a height of 6 cm. What is the area?
30
Formula forarea of circle
c=2pir
What is x 5(x - 2) = 3x + 14?
12
A map uses a scale of 1 inch : 5 miles.
If two cities are 4 inches apart on the map, how far apart are they in real life?
20 miles
4[3+2(5−1)]−6
38
A circle has a diameter of 12 feet. What is the area?
Use π=3.14\pi = 3.14π=3.14.
113.04
SA=2lw+2lh+2wh
A student scored 80% on a test and got 40 questions correct.
Write and solve an equation to find the total number of questions.
50 questions
A class has 28 students. The ratio of boys to girls is 3:4.
How many girls are in the class?
16
[2^3+4(6−2)]−18÷3
114
A circular garden has a radius of 7 meters. A path is built around the outside edge of the garden. What is the circumference of the garden?
Use π=3.14\pi = 3.14π=3.14.
43.96
Formula for distance on a coordinate plane?
d=sqrt((x2-x1)^2 + (y2-y1)^2
Solve for x 5(x - 4) + 12 = 2(x + 9) + 15?
41/3 or 13.67
A school is ordering buses for a field trip. The ratio of teachers to students on each bus must remain 2:15. If there are 12 teachers attending the trip, how many students can attend while keeping the ratio the same?
90
3 ( 2^3 − 5 ) + 4 ( 7 − 9 ) ^2
25
A triangular banner has a base of 18 inches and a height of 11 inches. A circular logo with a radius of 3 inches is printed on the banner. What is the difference between the area of the triangle and the area of the circle?
Use π=3.14\pi = 3.14π=3.14.
70.74