sophiazjackson sophiazjackson

03-10-2021
Mathematics

contestada

what is the value of x in the solution to this system of equations?
4x + 7y = 85
x = 2y - 5

A) 11
B) 24
C) 6
D) 9

Respuesta :

seetha1980 seetha1980

03-10-2021

Answer:

D) x=9

Step-by-step explanation:

x = 2y- 5

2y = x + 5

y = (x+5) / 2

4x + 7(x+5)/2 = 85

8x + 7x + 35 = 85*2

15x + 35 = 170

15x = 170 - 35 = 135

x = 135/15 = 9

Answer Link

Otras preguntas

True or False? The North had a bigger population than the South.

Which one of the following choices is a simple sugar? A. Orange juice B. Chocolate C. Lactase D. Glucose

can someone help me with this

A college has a student to teacher ratio of 25 to 2. If there are 176 teachers at the college, how many students attend the college?

Jireh flew his crop duster from the ground to an altitude of 3,500 feet. He continued to fly at that height for 20 minutes until he descended to 2,000 feet. H

Read the following sentence. Pardon me, Professor, but may I please ask you a question about my grade? Why is “Professor” capitalized in the sentence? because i

See the attached file.

The submarine is underwater. It’s position is 645 feet below sea level. It rises in the water 100 feet and then descends 100 feet what integer represents the ch

if AB is the midsegment, fond the value of x. Show your work

Immediately following World War I the economy in the United States Suffered Prospered Was unaffected Plunged to its lowest numbers