dancer4life5642 dancer4life5642

03-02-2021
Mathematics

contestada

When solving this system of equations, what is the first step and why?
2x + y = 15
x-y=3

Respuesta :

Аноним Аноним

03-02-2021

Answer:

Step-by-step explanation:

Rearrange:

x-y=3

x=3+y

Substitute x as 3+y

so you can solve for y:

2(3+y)+y=15

6+3y=15

y=3

Use x=3+y to find x.

Answer Link

Otras preguntas

Based only on the information given in the diagram, which congruence theorems or postulates could be given as reasons why ABC = DEF? Check all that apply. A. AA

Explain why a description of position depends on a reference point

English 11B—Argumentative Essay Begin by considering this question: Many of the founding documents in America are dedicated to showing that all men are created

y is inversely proportional to the square root of x. When y=7, x= 2.25. Write y in terms of x.

What were the immediate results of the November 1917 Bolshevik Revolution

The Declaration of Independence explained a = problems the colonists had with British rule. b = reasons colonists formed the Continental Congress. c = why some

How to prepared sodium chloride solution.

He had lunch. (Rewrite using past perfect tense)

5. True or False: A beginner should start with long workout sessions and work down to shorter ones. True False

In the following sentence, identify the participle and the word the participle modifies. Falling continually, the heavy, wet snow meant the ski slopes would be