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Elenna [48]
3 years ago
7

6) Select the best method to solve the system.

Mathematics
1 answer:
Andrew [12]3 years ago
7 0

Answer:

Elimination

x=-5 and y=-8

Step-by-step explanation:

-(5x-4y=7) <--- Multiply by a negative so that y can cancel out

4x-4y=12

=-5x+4y=-7

  4x-4y=12

=-x=5

  x=-5

5(-5)-4y=7 <--- plug x back in to solve for y

-25-4y=7

+25     +25

-4y/-4=32/-4

y=-8

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Use this picture to solve for X
Zepler [3.9K]

Answer:

x=2

Step-by-step explanation:

i would set up a system of equation using the pythagorean theorem:

1^2+x^2=z^2

4^2+x^2=y^2

Add up these equations to get:

17+2x^2=y^2+z^2

But notice that

y^2+z^2=5^2

So you can substitute

17+2x^2=25

2x^2=8

x^2=4

x=2

:)

8 0
3 years ago
A milkshake recipe calls for 1/3 cup of milk for each milkshake if the server has 15/8 cups of milk what is the maximum number o
Yuri [45]

Answer:

5

Step-by-step explanation:

Q is asking how many (1/3)s are in (15/8):

(15/8) / (1/3)

<em>(to divide fractions, flip the second fraction over and then multiply)</em>

(15/8) * (3/1)

(15 * 3) / (8*1)

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=5.625

7 0
3 years ago
Which expression is equivalent to 2(y + 11)<br><br> 2y + 22<br> 2y + 11<br> y + 22
olga55 [171]
Answer is 2y+22
Reason because you distribute the 2 to both of them
5 0
3 years ago
Read 2 more answers
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ella [17]

In order to solve it you have to get x by itself.

1. Simplify. 1/4 + 1/2 + x is also the same as 3/4 + x. So you have 3/4 + x = -3/4.

2. Then you subtract 3/4 on both sides to get x by itself. x = -3/4 - 3/4

3. Simplify. x = -1 1/2 or -1.5 depending on whether you need the answer in a fraction or a decimal.

5 0
4 years ago
Read 2 more answers
I really need help pls!! It’s also due really soon!!
frutty [35]

Answer:

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Step-by-step explanation:

I´m pretty sure that is the answer because I solved a similar question like it and I got it right.

7 0
3 years ago
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