351 chairs in 27 rows how many chairs in each row

A surveyor measures the top of a building 50 ft away from him. his angle measuring device is 4 ft above ground. the angle of elevation to the top of the building is 63 degrees. how tall is the building?

If you begin investing at age 45 instead of age 40, how much more do you need to invest per month to have $retirement? Why this amount so much greater than the difference between 20 and 25?

A governor of state A earns 53,435 more than the governor of state B. If the total of their salaries is 290,395, find the salaries of each

Three of these pairs of quantities are related by direct variation. Which pair is NOT? A. x = hours traveled at 60 miles per hour, and y = total distance traveled B.

Solve the equation. x - 8 = 3x A) - 6 B) - 5 C) - 4 D) - 3

9.29 in fraction form

1. Make sure you show all of your work! Change the quadratic to factored form. g (x) = 2x² - 3x-5

A store has 300 televisions on order, and 80% are high definition. how many televisions on order are HD?

Joe is training for a race in 30 days. He needs to run a total of 135 miles. How many miles will joe need to run each day to be ready for the race

Becca predicts that 75% of the people she invites to her party will come. If she wants to have at least 21 guests, how many people should she invite to her party?