About 70% of Earth's surface is covered by water. If the diameter of earth is about 12,750km, find the area not covered by water to the nearest 100,000km^2.

Sarah solved a quadratic equation. Her work is shown below, with Step 1 missing. What could Sarah have written as the result from Step 1? 2 (x + 1) 2 + 6 = 134 Step 1 (x+1) 2 - 64 Step 2 2+1 = 18 Step 3 x = - 9 or x = 7 Step 4 Khan academy quiz

In a classroom the ratio of boys and girls is 3 to 8 how many boys are in the class

10 + (2 x 3) 2 : 4 * 1 over 2 to the power of 3 11 and 1 over 8 25 and 1 over 6 69 82

Which of these types of heath insurance can you buy through a private insurance company

What is 0.22 as a fraction in lowest terms? o o o o

Patty is building a rope ladder for a tree house. She needs two five foot pieces of rope for the sides of the ladder. she needs 7 pieces of rope, each 18 inches long, for the steps.

A classmate simplifies the expression in exercise 1. is the expression he wrote equivalent to the original expression? explain. exercise 1: 14d - 9 - 21k - 7dk + 2 exercise 4: 7dk (2 - 3 - 1) - 7 the length of a book is 2.

91 boxes of apples hold a total of 2,605. Assuming each box has about the same number of apples, estimate of apples in each box.

Compare 1 out of 3 and 3 out of 10. Are these values equal?

Bob won big at bingo last night, he walked away with $800. The first thing Bob does is to take a cab to his mother's house. He gives the cab driver $20 and tells him to keep the change.