5x+9y+z=20

2x-y-z=-21

5x+2y+2z=-21

Mr. hill had 471 pencils. He gave away 164 pencils. How many pencils did he keep

Was is 29.15 as a mixed number in simplest form

A nursery sells trees of different types and heights. these trees average 60 inches in height with a standard deviation of 16 inches. suppose that 75 pine trees are sold for planting at city hall. what is the standard deviation for the sample mean?

What's 7^2+15/7^2?

What is 50devided by 50 but take away 43

A cereal box contains 8 1/4 cups of cereal. The nutritional information on the box defines a serving as 3/4 cups. How many servings does this box contain?

70%days in june were sunny how many days were sunny

A=1/2 (b+b+b) h. slice for h

What two numbers add up tp - 13 but when multiplied equal - 7

Contrast the way boys and girls are treated in Pakistan, beginning at birth. Malala's father places her name on the family tree. It is the first female name on the family tree in 300 years. Explain the symbolism of this bold act by her father.