What formula would you use to show that side are perpendicular

A sum of money amounting to $3.70 consists of dimes and quarters. If there are 19 coins in all, how many are quarters?

Sara is 6 years older than max in 3 years she'll be 1 1/2 of max's age. how old is max?

A seller has a house that is 1900 ft^ 2. The neighborhood comps show the line of best fit to be y = 0.074x + 50.48. What is a fair price for this house?

Without drawing, tell how many different rectangles have an area of 5 square units. Explain.

So if i have 0.02, 0.2 then what comes next

what is 2.33 as a fraction

Paula earned a 56% on her science test. If she got 14 problems correct, then how many questions were on the test?

How to find the length of the hypotenuse of a line segment?

T-shirts at a flea market cost $4.50 each and shorts cost $6 each. You have $108. Write an equation in standard form that models the possible combinations of t-shirts (t) and shorts (s) you can buy.

Solve 2 log x = log 64 ...