Use the substitution method to solve the system of equations. Then check your solution.

1.) b=-4a+5

a-b=5

2.) 6x-y=-15

x+2y=17

3.) x=10

y=2x-6

4.) n=-7m-4

14m+2n=-8

2. Where was the center of the distribution of soldiers' foot lengths? How was the overall shape of the distribution described?

Last year the average monthly revenue at the Newberry times newspaper was 82,300 this year average monthly revenue so far ahead with 69,955 what is the percent of decrease in the average monthly

Ms. Fox asked her class "Is the sum of 4.2 and √2 rational or irrational?" Patrick answered that the sum would be irrational. State whether Patrick is correct or incorrect. Justify your reasoning.

A Sum of $14 is made of 92 coins consisting of dimes and quarters. How Many are there of each kind of coin

The number of Tim's stamps is 3/4 the number of david's stamps. if tim gives 1/2 of his stamps to david, what will be the ratio of the number of tim's stamps to the number of david's stamps

Peter is 2 years older than Winnie. Peter's age is 16 years less than seven times Winnie's age. The equations below model the relationship between Peter's age (p) and Winnie's age (w): p = w + 2 p =

Name a fraction equivalent to 2/3

The teacher has 15 gold prize ribbons, 22 blue ribbons, and 5e red ribbons. There are 12 boys and 18 girls in the class.

3 (6x^2-5x+7) - 2 (-4x^2+8-10)

A model ship is built to a scale of 1 centimeter: 5 meters