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3 years ago

Which equation has x = -2 as the solution?

Mathematics

2 answers:

anyanavicka [17]3 years ago

5 0

The answer is for this question is A

Leona [35]3 years ago

5 0

Answer:

I believe the answer is C.

Step-by-step explanation:

2x + 8 = 4

-8 -8

2x = -4

/2 /2

x = -2

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What is the answer to this? 15 - 4(3) =

Crank

Answer:

Hello!! The answer is 3

Step-by-step explanation:

15 - 4(3)

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3 years ago

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PLEASE HELP AND HURRY

kogti [31]

Here the given expression is

$y =(\frac{3}{4})^x$

We need to find the value of y when x =3 . So we substitute the value of x in the given expression.

$y =(\frac{3}{4})^3 = \frac{27}{64} =0.4$

So when x=3, y=0.4 and that's the required answer.

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3 years ago

If 6 pipes fill a tank in 120 minutes, then 5 pipes can fill it in how many minutes

Marianna [84]

Answer:

It'll take 144 minutes for 5 pipes.

Step-by-step explanation:

${ \sf{6 \: pipes = 120 \: mins}} \\ { \sf{5 \: pipes = ( \frac{6}{5} \times 120) \: mins}} \\ \\ = { \sf{144 \: mins}}$

but practically, it seems to be abnormal. if 6 pipes take 120 mins, 5 pipes must takes a time greater than 120 mins cause amount of water flowing to the tank is decreasing.

But there is a possibility that pressure of water was increased for the case of five pipes, that's why it takes a time less than 120 mins. (t < 120)

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3 years ago

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What are the solutions of x2 +6x-6 = 10?

nalin [4]

Answer:

x=2,-8

Step-by-step explanation:

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3 years ago

Help on number 3 please thank you ver much

iVinArrow [24]

I think it would be these two

7 0

3 years ago