3 years ago

Solve the linear equation: x-y=7 0.5x+y=5

Mathematics

1 answer:

evablogger [386]3 years ago

4 0

Add the equations.

x-y%2B0.5x%2By=7%2B5

1.5x=12

highlight%28x=8%29

Now use either equation to solve for y.

8-y=7

highlight%28y=1%29

x=8

y=1

You might be interested in

Two competing gyms each offer childcare while parents work out Gym A charges $9.00 per hour of childcare. Gym B

emmainna [20.7K]

Answer:

They charge an equal amount of money each hour.

7 0

3 years ago

Read 2 more answers

Logan collect pledges for the charity walkathon. He will receive total contributions of $60 plus $20 for every mile that he walk

Afina-wow [57]

So 60 + 20 is 80, and that is $80 a mile. 80 x 3 = 240, + 80 = 320. and then we could say 2/6 of 80 is about 28, right? so i suppose 4 2/6? sorry if it's wrong, just trying to help to the best of my ability

4 0

3 years ago

Simplify the expression below.

Novay_Z [31]

Answer:

$\displaystyle 6$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{7^2 - 13}{24 - 18}$

Step 2: Evaluate

[Fraction] Exponents: $\displaystyle \frac{49 - 13}{24 - 18}$
[Fraction] Subtract: $\displaystyle \frac{36}{6}$
[Fraction] Divide: $\displaystyle 6$

5 0

3 years ago

I need help please?!!!

yanalaym [24]

Answer is: C

√11 ≈ 3.3661
Which the closest to your answers is 3.3

5 0

3 years ago

Solve mathematics problem in photo please!

laila [671]

Hello,

8/(x-7)=7/2
==>(x-7)*7=8*2
==>7x-49=16
==>7x=65
==> x =9+2/7

Answser A

8 0

3 years ago