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Bad White [126]
3 years ago
15

Solve for x. -5x = -10

Mathematics
2 answers:
andreev551 [17]3 years ago
6 0

Answer:

x=2

Step-by-step explanation:

divide -5 to both sides to isolate the x. two negatives make a positive therefore x=2.

i hope this helps :)

Yuliya22 [10]3 years ago
4 0

Answer:

2

Step-by-step explanation:

-10 divided by -5 is 2. Therefore, x=2.

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Kendra has $6.00 in dimes and quarters. If she has 2 times as many quarters as dimes, how many of each coin does she have?
r-ruslan [8.4K]
Make a system of equations.

\sf0.10d+0.25q=6
\sf~q = 2d

Plug in 2d for 'q' in the first equation:

\sf0.10d+0.25q=6

\sf0.10d+0.25(2d)=6

Multiply:

\sf0.10d+0.50d=6

Combine like terms:

\sf0.60d=6

Divide 0.60 to both sides:

\sf~d=10

Now plug this into any of the two equations to find 'q':

\sf~q = 2d

\sf~q = 2(10)

\sf~q = 20

So she has 10 dimes and 20 quarters.
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Step-by-step explanation:

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3 years ago
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Susan tossed a die 720 times. Which of the following would be a good estimate of the number of times she got the number 3 on the
wolverine [178]
120 out of 720. Hope I heped.
8 0
3 years ago
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mash [69]

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7 0
3 years ago
Anybody good in pre Calculus and know how to do #3 or #4?
lys-0071 [83]

Answer:

3. 0

4. n = -2

Step-by-step explanation:

I haven't taken pre-calc but this looks a lot like algebra.

For #3, just plug in -2 for the x values, so:

x^2 + 4x +4

(-2)^2 + 4(-2) + 4

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8n + 6 = -10

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8n = -16

divide both sides by 8

n = -2

7 0
3 years ago
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