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Sholpan [36]
3 years ago
14

If -10x – 9y = -7 is a true equation, what would be the value of -30x – 27y?

Mathematics
1 answer:
Tpy6a [65]3 years ago
8 0

Answer:

-30x-27y = -21

Step-by-step explanation:

We know that;

-30x-27y = 3(-10x-9y)

Recall, -10x-9y = -7

Thus; -30x-27y = 3(-7) = -21

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yulyashka [42]

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$760

Step-by-step explanation:

950 x 0.8 = 760

6 0
3 years ago
What is the value of x in the equation 2x+3y=36y when y=6?
jonny [76]

Answer:

y = 6 so

2x + 3y = 36y is equal to:

2x + 3*6 = 36*6

-> 2x + 18 = 216

We must now move 18 to the other side of the equation. As we do that, we also change it's sign to negative 18:

2x = 216 - 18

We simplify this

2x = 198

Now, that we got to this point, we know that 2x is equal to 198. To find x we must divide the both sides of the equation by two:

2x/2 = 198/2

And we get that

x = 99

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Can someone help me with this please
Yuri [45]

Answer:

ofc ill help! x=-35

Step-by-step explanation:

4 0
3 years ago
If julie needs 3 14_ cups of oatmeal, how many 1_ 4 cups of oatmeal will she use?
nydimaria [60]
She will use 13  there are four 1/4 per cup 4 times 3 plus 1 =13
3 0
3 years ago
If John makes $20 an hour, how long will it take him to make $140?
Len [333]
For 1 hour, money = $20
For $140, it would be: 140/20 = 7 hours.

So, option C is your final answer.

Hope this helps!
4 0
4 years ago
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