3 years ago

I need help I don’t understand and I need to show my work who would help me??

Mathematics

2 answers:

stich3 [128]3 years ago

5 0

Answer: b

Step-by-step explanation:

In the last question, you wrote on a second equation "13x ...." kkk

Let's go:

We have to check each one answer in the following system:

x - 2y = 7

3x + 7y = 8

I can use the substituition method to solve this system...

x = 7 + 2y

3x + 7y = 8

3(7 + 2y) + 7y = 8

21 + 6y + 7y = 8

13y = 8 - 21

13y = -13

y = -1

x = 7 + 2.(-1)

x = 5

Finally, the correct answer is the second one (letter b).

Gre4nikov [31]3 years ago

4 0

The answer is B! I hope this helps. Enjoy the holidays

You might be interested in

What is the factored form of 25x^2-120x+150

romanna [79]

The answer that you should get is 5(5x^2- 24x +30)

7 0

3 years ago

Read 2 more answers

Plz help me Find LM.

Sunny_sXe [5.5K]

We can find out what LM is based on the fact that the bases of the 2 triangles are the same, this would also mean that the hypotenuse sides of the triangles should also be the same as well. Thus the sides of LM should also equal the sides of MN.

Another way, is to assume that the triangles are right angle ones, and use Pythagorean theorem to solve for the height and use that to solve for the hypotenuse.

8 0

3 years ago

In Cherokee County, the fine for speeding is $17 for each mile per hour the driver is traveling over the posted speed limit. In

zlopas [31]

Answer:13 miles over the speed limit

Step-by-step explanation:

3 0

3 years ago

102 + 7y = 16<br> 15x + 8y 29<br> Is this consistent or inconsistent

mel-nik [20]

Answer:

Step-by-step explanation: