Use substitution or elimination

y=-2x - 6

y = x + 9

What is the square root of 1 and 9/16

Rajesh jogged 3/4 mile, and then walked 1/6 mile to cool down. How far did he travel?

Multiply. x^2 + 4x + 2 2x^2 + 3x - 4 A) 2x^4+12x^2-8 B) 2x^4+23x^2-10x-8 C) 3x^2+7x-2 D) 2x^4+11x^3+12x^3-10x-8

A box contains five slips of paper, marked $1, $1, $10, $10, and $25. The winner of a contest selects two slips of paper at random and then gets the larger of the dollar amounts on the two slips. Define a random variable w by w = amount awarded.

Write 2-3 as an addition problem. Then simplify the expression

Write an equation with the solution x=20?

A sequence has a first term of 2 and a constant ratio of - 3/2 what are the first five terms of the sequence

A three-dice is a six sided dice with only the numbers 1, 2 and 3. The usual numbers 4, 5 and 6 are replaced by 1, 2 and 3 respectively. 4 three-dice (with sides labeled 1, 2, and 3) are rolled and the numbers face up on the 4 dice are recorded.

Judy is making scarves to give to her family as gifts. She needs to make 5 scarves and each scarf is 3.75 feet long. How many yards of fabric does Judy need to buy?

Find the margin of error for a 95% confidence interval for estimating the population mean when the sample standard deviation equals 100 , with a sample size of (i) 484 and (ii) 1764. What is the effect of the sample size?