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3 years ago

What expressions equal -3x^2-27

Mathematics

1 answer:

Lady_Fox [76]3 years ago

8 0

Is that x for you to multiply or is that a variable.

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A 60 inch board is to be cut into three peices so that the second peice is four times as long as the first peice and the third p

Lostsunrise [7]

Answer:

The first piece is 6 inches, the second piece is 24 inches, and the third piece is 30 inches

Step-by-step explanation:

Since the second piece is 4 times longer than the first one, it will be represented by 4x.

The third piece is 5 times as long as the first one, so it will be represented by 5x.

Create an equation adding up the 3 x values up to 60:

x + 4x + 5x = 60

Add like terms and solve for x:

10x = 60

x = 6

So, the first piece is 6 inches.

Then, plug in 6 for x to find the lengths of the second and third pieces.

4(6)

= 24

The second piece is 24 inches

5(6)

= 30

The third piece is 30 inches

So, the first piece is 6 inches, the second piece is 24 inches, and the third piece is 30 inches

6 0

3 years ago

Which ordered pair is shown on the graph?

Oliga [24]

Answer:

(2,4)

Step-by-step explanation:

look at the x axis and y axis and see where they meet

6 0

2 years ago

Read 2 more answers

Deborah has two paintings in her portfolio and paints three more each week.Kai has twelve paintings in her portfolio and paints

elena-14-01-66 [18.8K]

Well, we can set up these equations like this-
Deborah- 2+3w
Kai- 12+2w
w=number of weeks that pass
Now, we set them equal to each other:
2+3w=12+2w

Solve for w
2-12=2w-3w
-10 = -1w
w = 10
10 weeks. Hope this helped!

4 0

3 years ago

V=pir2h. Solve for pi

Fynjy0 [20]

$v = \pi {r}^{2} h \\ \\ \pi = \frac{v}{ {r}^{2}h }$

I hope I helped you^_^

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2 years ago

Which of these expressions is equivalent to -2(x-5)?

Serga [27]

Answer:

The answer is -2x+10

Step-by-step explanation:

Hope this helps

4 0

3 years ago