How do you find the surface area of a sphere?

Sara tried to evaluate 21 : 7 x 8 step-by-step 21 : 7 x 8 = 3x8 Step 1 = 24 Step 2 Find Sara's mistake.

Mildred bought 2-cent stamps, 4-cent stamps, and 5-cent stamps for $4.35. The number of 2-cent stamps exceeded the number of 5 cent stamps by 50. The number of 4-cent stamps was 10 less than twice the number of 5-cent stamps.

Jon and Ken are collecting bottles to recycle. They have set a goal to find 100 bottles in a week. If they find 5 bags of bottles and each bag has 10 bottles in it, how many more bottles will they need to find to reach their goal?

Which expressions are polynomials? Select each correct answer. 6 + w z + 1 y²-3√y+4 2x^4-y

How can I factor 24 + 32x

Scientists are comparing two planets to determine the difference in size. The scientists are using exponential notation to save space in their calculations. They know that planet Delta is 57 cubic meters, and that planet Epsilon is 53 cubic meters.

Solve the system by substitution y=x^2-2x+1 y=2x+1

Each sales associate at an electronics store has a choice of two salary options shown below. $115 per week plus 9.

Steps for figuring full price with 25% discount is $40.

How to find the volume of a square pyramid with slant height?