Is a simple random sample is valid (sometimes, always, or never)

Solve each equation. a. - 1/8d - 4 = - 3/8 b. - 1/4m + 5 = 16 c. 10b + - 45 = - 43 d. - 8 (y - 1.25) = 4 e. 3.2 (s + 10) = 32

What is the range of the following function: f (x) = - x^2+x^-1 if the domain is {-2, - 1, 1}

Will bought 3 college textbooks. One cost $32, one cost $45, and one cost $39. What is the average price of his books? Choose the answer that correctly calculates the average. A. $32 + $45 + $39 : 3 B. ($32 + $45 + $39) : 3 C. 3 * $32 + $45 + $39 D.

How to simplify 14/21

If your front yard is 65ft by 45ft and your backyard is 35ft by 45ft. how much fencing should you buy

Factor completely. 2x^4+4x^3-30x^2

The price of 5 scarves is $56.25 what is the unit price

Calculate the interest produced by a principal of $ 4,500 at 5% annual simple interest in 8 months.

10+x=5 (1/5x+2) Equations with infinite and no solution

What is the area of a rectangle with a length 20 yd and a width of 16 yd? A. 320 yd2 B. 325 yd2 C. 333 yd2 D. 340 yd2