BrooksDalton
BrooksDalton BrooksDalton
  • 11-01-2019
  • Mathematics
contestada

2r + 2s = 50 and 2r – s = 17.

A. r = 3, s = 11
B. r = –8, s = 33
C. r = 14, s = 11
D. r = 25, s = 33

Respuesta :

ritiguda
ritiguda ritiguda
  • 11-01-2019

Answer:

Option C

Step-by-step explanation:

2r+2s=50

2r-s=17

subtract both the equations

you'll get

3s=33

divide 3 on both sides

s=11

substitute s=11 in any of the 2 equations

2r-s=17

2r-11=17

add 11 both sides

2r=28

divide 2 both sides

r=14

Answer Link

Otras preguntas

One characteristic that makes dragonflies and damselflies different from other insects is that
What is the antonym of combine​
how is ozone formed? ​
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HE
Hi if you answer please explain how you got the answer thanks! :) ​
Which of the coordinate points below will fall on the line with the consent of the personality is 1/4 select all that apply
Write a scientific explanation that explains how organelles perform specific tasks within cells.USE CER (Claim Evidence Reasoning)
A developing country today (that is, a country with less wealth than other countries) is likely to be a/an?A. Industrialized nation . B. former colony C. imperi
where do alpine zone take place​
question 4 pleaseeee