The Burgi, Khalifa the tallest building in the world with 163 floors

What is the ratio equivalent to 3/10

Use substitution to solve the system of equations. y = - 2x x - 3y = 21 (3, 4) (-6, 12) (3, - 6) (-2, - 6)

the price to send a large envelope first class mail is 88 cents for the first ounce and 17 cents for each additional ounce. How much did a large envelope weigh that coast $2.07 to send?

If a = 4 and b = 2, what is the value of the following expression? 3 (a + 4b) - 6 A. 29 B. 42 C. - 18 D. 30

Factor completely. 8x^2-18x-5

Dawn is trying to find the dimensions of a parallelogram. She knows that the base is one unit less than twice the height of the shape. The area is 91 square units. How long are the base and height?

When sandra walk through the house she saw that 18 lights are on and only one third of the lights were off how many lights were off?

What is the difference? 45-13

Evaluate. 7C6 A. 9 B. 1 C. 5,040 D. 7 can someone explain this to me?

Nicole compares two printing plans for business cards. Which equation gives the correct value of n, the number of business cards, for which Plans A and B cost the same? A. 0.1n = 25 + 0.05n B. 0.1n = 25 + 0.05 (n - 200) C. 0.1n = 25 (0.05n) + 200 D.