What is the radius of a circle with an area of 400 cm squared

Evaluate r (x) = - 0.21x^3 + x^2 - 8.1x - 3 for x = - 1 and x = 2.

A pair of shoes sell for $27 per pair. there is a sell tomorrow on shoes offerring two pairs for $45. How much will 3 pair of shoes cost today?

Math calculate each quotient

For every 5 boys on a softball team there is 1 girl. What is the ratio of boys to girls?

What is the best estimate for 289 and 7

If the probability that it rains tomorrow is 35%, what is the probability that it does NOT rain? A) 15% B) 35% C) 65% D) 75%

Find z↓0.755. (like a downward exponent) A -0.2266 B 0.2266 C -0.69 D 0.69

Francis has 6 chocolate bars. he gives one to John and one to Chester. he keeps the rest for him. what fraction of the chocolate bars did he give away?

To estimate the number of people in Springfield, population 10,000, who have a swimming pool in their backyard, 250 people were interviewed. Of those, 115 had a swimming pool.

Lee put $10,000 into a stock market index mutual fund that grew at an average of 7% per year for 10 years. About how much is in Lee's mutual fund account after 10 years? Ignore compounding.