Numerical expression definition

Venus and Serena measured a tennis court and found that it was 42ft longer than it was wide and had a perimeter of 228ft. What were the length and the width of the tennis court?

Find the mean deviation of the following set of numbers: 10,12,14,15, 17 and 19 (A). 2.5 (B). 2.6 (C). 2.7 (D). 2.8

Bill says that he can add 23 and 40 without regrouping is bill correct how do you know

Round each number to the nearest hundred and estimate the sum. 1,382 + 966

How much better is the return on a 11% yearly interest rate investment that is compounded quarterly (4 times per year) as opposed to compounded yearly?

Theodore invested $19,000 at 11% simple interest for 1 year. How much is in the account at the end of the 1 year period

Beccas dad told her that she needs to practice piano for two hours this week so far she has practiced 20 minutes on Monday a half an hour on Tuesday and 15 minutes on Wednesday how much longer does she need to practice?

Which lines are perpendicular to the line y - 1 = (x+2) ?

Josh rides his bike along a 9-mile trail. There are trail markers every mile. The markers start at mile and end at 9 miles. How many markers does Josh see on the trail? A. 1/27 B. 1/3 C. 3 D. 27

How many radians is - 135 degrees? I know the formula just don't know how to do it