Which of the choices is the standard deviation of the sample shown here? 19,20,21,22,23

elena said that finding 10% of 2,340 and multiplying that number by 3 is the same as finding 30% of 2,340. Is she correct? explain why or why not

What is the circumference of a circular courtyard that is 42 ft in diameter? C ≈ 66 ft C = 132π ft C ≈ 132 ft C ≈ 264 ft

What must be done to the expression x•6.78 to make it equal x? A. multiply by 6.78 B. subtract 6.78 C. subtract x D. Divided by 6.78 E. add 6.78

A T-shirt makes wants to open his first store. If he chooses the store on Main Street, he will pay $640 in rent and will charge $30 per T-shirt. If he chooses the store on Broad Street, he will pay $450 in rent and will charge $25 per T-shirt.

6xt3x - x+9 = 33 solve the equatolion

Which of these formulas is correctly written from the original formula to solve for b? a=2bc+d

For the sequence 3,9,27,81 ..., give a formula for its nth term:

25/3 as a mixed or whole number in simplified form

Suppose that F (x) = x^2 and G (x) = 2x^2-5. Which statement best compares the graph G (x) with the graph of F (x) ? A. The graph of G (x) is the graph of F (x) stretched vertically and shifted 5 units to the right B.

Select the best possible first step to solving the system by first eliminating the x variable. 4x + 9y = 21 3x - 8y = 1 A. Multiply the first equation by 3, and multiply the second equation by 4. B.