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I am Lyosha [343]
2 years ago
8

Please help 2y+x=-15 y=2x

Mathematics
1 answer:
Eva8 [605]2 years ago
5 0

Answer: x = -3

Step-by-step explanation:

2y + x = -15

y = 2x

2y = 2(2x) = 4x

4x + x = -15

5x = -15

x = -3

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Simplify by combining like terms 4x(x+9)+10x
Natalija [7]

Answer:

4x^{2} + 46x

Step-by-step explanation:

<u>Step 1:  Distribute  </u>

(4x * x) + (4x * 9) + 10x

4x^{2} + 36x + 10x

<u>Step 2:  Combine Like Terms </u>

4x^{2} + 36x + 10x

4x^{2} + (36x + 10x)

4x^{2} + 46x

Answer:  4x^{2} + 46x

6 0
2 years ago
Is x - 0.30x equivalent to 0.70x?
vlada-n [284]

hi

it's equal to as X = 1X  

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6 0
2 years ago
Read 2 more answers
Find the area of the rectangle. ​
Andreyy89

Answer:  5.6ft²

Step-by-step explanation:

Area of a rectangle = length x width

                                 = \frac{4}{5} ft (7ft)

                                 = \frac{28}{5}ft^{2}

                                 = 5.6ft²

5 0
2 years ago
Please help, thank you!
geniusboy [140]

Answer:

Es que te ayude amigo medas corona por favor plis

4 0
2 years ago
Please help!!!!!!! im so confused lol
pav-90 [236]

Answer:

a : c = 7 : 10

Step-by-step explanation:

The two ratios (a : b and b : c) both have b in common, so to work out what a : c is, we can use b to 'bridge' the two ratios together.

However, in a : b, b is 4. But in b : c, b is 2. We need to make sure b is the same in both ratios before we can combine the ratios together. The easiest way to do this is to multiply b : c by 2 to get b : c = 4 : 10. Now b is 4 in both ratios.

So now, we can combine the two ratios together to get a : b : c = 7 : 4 : 10. Since we only want a : c though, we can just drop the b and get a : c = 7 : 10. No simplifying is necessary since the ratio is already in its simplest form.

Hope that helps! :)

5 0
2 years ago
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