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

PLEASE HELP! Part B Dario decides to take each one of the 4 pieces and share it equally among the 5 of them. First, he divides one piece into 5 equal parts and

How many molecules are there in 1.21 moles of O2?

solve the following inequality giving brainliest

Jocelyn is preparing bags for a grab bag contest at a store. Each bag will contain one coupon and one small item. The table summarizes the number and contents o

1. The disorder which makes the nail plate soft with parts of nail breaking away or the nail becoming thick and irregular-a. Tinea or ringworn b. Infection of t

please it my last question here is your points

What is the definition of a unit test from a devops perspective?.

in a class there are 75 students if there are 27 male students then the ratio of the number of female students to the total number of students in the class isPl

How many times greater is the product of 5x20 compared to 10x20?

g What is the first step of the scientific method? a. Observe a phenomenon. b. Design and conduct an experiment. c. Formulate a hypothesis. d. Co