Twice a number, n, increased by 7 is equal to 19

How do I do this question f (x) = -x^2+5

Terry wants to cut a cube to create a triangle. How should he cut it?

Paula's living room is in the shape of a rectangle. It measures 20 feet long and 10 feet wide. What is the area of her living room? 30 square feet 60 square feet 100 square feet 200 square feet

5.91 rounded to the nearest tenth

How many 7-digit telephone numbers can be created if the first digit must be 8, the second must be 5, and the third must be 2 or 3?

Find the sale price of the nearest send a Radio is being discounted 20% if the sale price of the radio is $51.44 what was the original price of the radio

What are undefined integers?

Owen has 12 pieces of rope that are 4 yards each. owen uses 6 pieces that are 6 feet long. how much does he have left

An Olympian swam the 200-meter freestyle at a speed of 1.8 meters per second. An Olympic runner ran the 200-meter dash in 21.3 seconds. How much faster was the runner's speed than the swimmer's speed to the nearest tenth of a meter per second? A 0.

Use the drag and drop tiles to determine whether the number is rational or not rational