mae9110 mae9110

01-03-2021
Mathematics

contestada

3x+y=-9
Y=5x+7
Solve the system of linear equations by substitution

Respuesta :

hookkick6969 hookkick6969

02-03-2021

Answer:

x=-2

Step-by-step explanation:

Substitute y=5x+7 into the equation 3x+y=-9

So you will have, 3x+5x+7=-9

3x+5x=8x

8x+7=-9

8x+7-7=-9-7

8x=-16

x=-2

Answer Link

Otras preguntas

How is the underlined gerund used in the sentence? Her hobby in the springtime is gardening.

Which saying describes the BEST reason for using effective communication skills when meeting someone new? A. Necessity is the mother of invention. B. You can't

what is the meaning of acne

what groups did nativists target

Identify the sentence that uses commas correctly. a) I also want to go to Mexico and, I am saving for the trip. b) I also want to go to Mexico, and I am savin

Burma is one of the countries that borders India. a. True b. False

How many sides does a hexagon have? A. 5 B. 6 C. 7 D. 8

The combined land area of the countries A and B is 178,973 square kilometers. Country A is larger by 573 square kilometers. Determine the land area of each coun

Meristematic cells called the _____ add width to the plant body. shoot tip root tip vascular cambium phloem

According to ancient Egyptian beliefs, which best describes the afterlife?the a . events that occurred in pyramids b . life as a god after death c. life after