3 years ago

What is the solution to the system of equations x-y=5 and 3x+7y=-5

Mathematics

1 answer:

True [87]3 years ago

6 0

Answer:

Step-by-step explanation:

3(x-y)-3x-7y=3(5)-(-5)

3x-3y-3x-7y=15+5

-10y=20

y=-2, since x-y=5

x-(-2)=5

x+2=5

x=3

So the solution is the point (3,-2)

You might be interested in

I am less than 100. I am an even number. I am a multiple of 5. I am divisible by three. The sum of my digits is an even number.

aliina [53]

It is 60
Hope this helped!!

7 0

3 years ago

Solve for x,y and z in the following diagrams

chubhunter [2.5K]

Can I get a new photo, I would gladly answer all of them for you

7 0

3 years ago

Julia’s service at a beauty salon was $72.60, before tax. The sales tax rate was 8%. If she added 20% of amount before tax as a

Nutka1998 [239]

Your tax is $5.81
Your tip is $14.52
Your total is $92.93

6 0

3 years ago

one possible combination is red and hearts. write down all the other possible combinationas. write your answer like this (R,H) y

NeX [460]

Answer:

hmmmm.... sorry but i really dont know this yet

Step-by-step explanation:

4 0

2 years ago

Hello, what is 9/3 - 2? thank you

Akimi4 [234]

Answer:

Because 9/3= 3

And 3-2=1

Hence the answer is 1

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

What is the solution to the system of equations x-y=5 and 3x+7y=-5​

What is the solution to the system of equations x-y=5 and 3x+7y=-5