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

The element of satire in Lord Byrond Don Juan is best represented by which of the following statement?

HELP AND PLZZZ EXPLAIN! 18 + 3 |6 - 25| - 11

how did the rapid pace of technological change influence cubist artist in the early 20th century a. it convinced them to focus on emotion instead of form b. i

PLEASE HELP PLEASE WILL GIVE POINTS What does citing textual evidence mean? Question 1 options: To look back into the text for evidence to support an idea, answ

what must all scientists begin with

Which amendment to the u.S. Constitution lowered the voting age to 18?

What is the value of y in the equation y − 7 = 21? (4 points) Select one: a. 7 b. 17 c. 21 d. 28

Organic material porvidrd nitrogen for plants. Which soil component contributes the most nitrogen to plants?

Conduct online research and identify a song or piece of music, work of visual art, movie, or piece of literature that inspires you or helps you understand life

how do the due process clauses in the fifth and fourteenth amendments similar