Given the following definitions: U = {1, 2, 3, 4, 5, 6, 7} A = {1, 2, 4, 5} B = {1, 3, 5, 7} How many elements are in A' ∪ B?

Daria plans to cook exactly 7 servings of rice. according yo the cooking directions, how many teaspoons of salt should she add to the uncooked rice? 7/8 1 1/7 1 3/4 3/4

Y^2 - x^2 = 4 is it an ellipse, or a circle

A section of a rectangle is shaded to form a trapezoid. The lengths of the 2 bases are 7 and x. The length of a side that forms a right angle with side x is 7. A section of a rectangle is shaded. The area of the shaded section is 63 square units.

How is 109r17 written as a mixed number?

If f (x) = 4x+7 and g (x) = x^3, what is (g°f) (-1)

South Middle School has 750 students. North Middle School has 13/15 times as many students as South. Does North Middle School have more or fewer than 7500 students?

8 times 51 show your work

Simplify the expression 5 (7a+3) - 42

How do you do proofs, how to understand it better

Use simple interest to find the ending balance. 26000 at 3% for 2 years