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

As a form of _________ competition, bicycles can solve the same basic need as automobiles, albeit with a very different product.

Jane has 4 blue marbles, 3 red marbles, and 2 yellow marbles in a bag. Jane will randomly pick one marble from the bag. What is the probability the marble will

Thy youth's proud livery, so gazed on now, / Will be a tatter'd weed, of small worth held: What technique is being used?Question 1 options: Simile Hyperbole Per

volunteering, job shadowing. and internships all look good on college applications because they show colleges that

Locust trees are tall trees that first grew on Earth during the time of the dinosaurs. They have an adaptation that prevented the dinosaurs from eating them. W

Rome finally ruled ______ of the Mediterranean world. A.half B.all C.most D.some

What is the most basic level of organization in the human body ?

Please help on this one?

What is the next step to this question

the scatter plot shows the ages snd heights of 15 students in a physical education class. According ti the scatterplot, what percent of the total of students ar