On a math problem how do you check your answer and how do you no if the answer is right.

Solve for t. h (t) = - 16t^2 + 150t + 70

Divide -2 1/2 : 6 -2 1/6 -5 1/2 5 1/2 2 1/6

Find all complex solutions of 3x^2+6x+1=0. (If there is more than one solution, separate them with commas.)

Suppose you had x dollars in your bank account. You spent $22 but have at least $28 left. How much money did you have initially? Write and solve an inequality that represents this situation.

A certain rare form of cancer occurs in 37 children in a million, so its probability is 0.000037. In the city of Normalville there are 74,090 children.

Write a specific formula to describe the variation:x varies indirectly with the cube root of y; x=3when y = 125

A sphere has a radius of 12 meters. What is the approximate volume of the sphere? Use 3.14 for π. Round your answer to the nearest whole number.

8^2 - 4 (-3) (-2) / 8-8^2 : 4

Is 70+12 an expression or an equation

Simplify 2 · 5^2. A. 49 B. 20 C. 100 D. 50