Which equation results from adding the equations in this system?

x + 6y = 9

-x+2y = - 15

8y = - 6

8y = 6

4y = 24

4y = - 6

What does a obtuse angle look like

A baby weighed 7.25 pounds at birth at the end of eight months the baby weighed 2 1/2 times it's birth weight how many pounds did the baby weigh at the end of eight months

How do you solve 2x-5=11?

A 6-foot tall man makes a shadow that is 3 1/2 feet long. How tall is a building that makes a 14 7/8 foot shadow? 8.68 feet 1.41 feet 52.06 feet 25.5 feet

What is - 0.48+7/5? explain

9 weeks 5 days - 1 week 6days =

319.85 and 412.99 percent markup round to the nearest whole percent

Find expression sin52cos13-cos52sin13

What is the sum of 16.87 + (-98.35) ? a - 115.22 b - 81.48 c 81.48 d 115.22

2. Karin has 461 songs downloaded. Joe has 123 more songs downloaded than Karin. How many songs, s, does Joe have?