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

Which of the following is a complete sentence? A. Since she was hungry, she had a snack. B. Because I had not slept for two nights. C. Although Henry was

Using at least three sentences, explain the cycling of energy through the processes of photosynthesis and cellular respiration.

What two spheres causes rain streams to flood

a=625(1+0.051)(1)(4)

What type of number is -560,114

among Canada’s aboriginal peoples, there are over 600 recognized tribes that speak over 30 different languages. true or false ?

Sachiko wants to measure the temperature of ice water in a beaker. The thermometer she will be using is at room temperature. After she places the thermometer in

A supplementary angle to a 76 angle has a measure of?

Describe the relationship between carrying capacity and earths resources

What does this reveal about juliets idea of love