All categories

2 years ago

What is the solution to this system? X = 7 - 2y 2x + y = 5 LE

Mathematics

1 answer:

Umnica [9.8K]2 years ago

4 0

Answer:

y= 3

Step-by-step explanation:

1. plug in 7 - 2y for X in 2x = y = 5 it would look like this 2(7-2y) = y= 5

2. distribute the 2 with what is in the parenthesis. remember PEMDAS!! it would be 14 - 4y + y = 5

3. get the y alone. to do this subtract 14 from both sides. you will have

-4y + y = -9

4. combine the Y. you will get -3y = -9 (remember there is a 1 in front of alone variables that is how i got - 3)

5. divide to get the Y alone. that will be -9/-3 which is 3

your final answer: Y= 3

hope this helped :)

You might be interested in

A partir del resultado obtenido ;con

Ymorist [56]

Answer:

I don't understand what your asking here.

Your translation: From the result obtained; with

Step-by-step explanation:

8 0

2 years ago

Find the number of paths from A to B. (Each step can only go up or to the right.)

mash [69]

Answer:

Total ways possible = 104 ways

Step-by-step explanation:

Total ways possible = 104 ways

The figure is attached here for understanding.

In the figure, the blank points are those points where we can not reach.

6 0

2 years ago

Write 125 as a product of primes. Use index notation when giving your answer.

Mnenie [13.5K]

Answer:

5^3

Step-by-step explanation:

125= 5*25

25=5*5

5 is a prime number and there are 3 of them so the answer in index notation will be 5^3

3 0

2 years ago

What is the volume of the prism?

mezya [45]

Answer:

40 $\frac{5}{8}$ $cm^{3}$

Step-by-step explanation:

The figure is a rectangular prism, so the formula would be Volume = length x width x height.

length = 6 $\frac{1}{2}$ cm

width = 2 $\frac{1}{2}$ cm

height = 2 $\frac{1}{2}$ cm

If you plug everything you have in the problem into the volume equation, you would get : Volume = 6 $\frac{1}{2}$ cm x 2 $\frac{1}{2}$ cm x 2 $\frac{1}{2}$ cm.

Without a calculator, I would first turn the mixed numbers into improper fractions.

6 $\frac{1}{2}$ = $\frac{13}{2}$

2 $\frac{1}{2}$ = $\frac{5}{2}$

Volume = $\frac{13}{2}$ x $\frac{5}{2}$ x $\frac{5}{2}$

When you multiply everything together you should get $\frac{325}{8}$ .

As a mixed number, that would be 40 $\frac{5}{8}$ $cm^{3}$ .

7 0

2 years ago

Annika is selling art prints at a comic convention.The convention charged her $50 for her table space, and she is selling her pr

asambeis [7]

If she wants to make 130.00, she should sell 90 prints. She is charged at first so she starts at -$50.00. And I don’t understand the first question.

5 0

2 years ago