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Alina [70]
3 years ago
6

Find the sum of -3x^2-x-10 and 10x^2+x-10

Mathematics
2 answers:
Jobisdone [24]3 years ago
6 0

Answer:

7x^2-20

Step-by-step explanation:

Dvinal [7]3 years ago
5 0

Answer:

1.<em> -2</em>

<em>2.-10</em>

Step-by-step explanation:

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Two similar pyramids have base areas of 12.2 cm2 and 16 cm2. The surface area of the larger pyramid is 56 cm2. What is the surfa
docker41 [41]

Given =

Two similar pyramid have base area of 12.2 cm² and 16 cm².

surface area of the larger pyramid = 56 cm²

find out the surface area of the smaller pyramid

To proof =

Let us assume that the surface  area of the smaller pyramid be x.

as surface area of the larger pyramid is 56 cm²

Two similar pyramid have base area of 12.2 cm² and 16 cm².

by using ratio and proportion

we have

ratio of the base area of the pyramids : ratio of the surface area  of the pyramids

\frac{12.2}{16} : \frac{x}{56}

x = 12.2 ×56×\frac{1}{16}

by solvingthe above terms

we get

x =42.7cm²

Hence the surface area of the smaller pyramid be 42.7cm²

Hence proved










3 0
3 years ago
Read 2 more answers
Multiply or divide the following measurements. Be sure each answer you enter contains the correct number of significant digits.
nydimaria [60]

Answer:

93.4 g/mL x 20. mL = 1868g.

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216.3 m/66.4 s = 3.26 m/s.

Step-by-step explanation:

Let's analyze each case.

93.4 g/mL x 20. mL

Hewe we are multiplying g/ml*ml. So we have the answer is (g*ml/ml) = g.

So

93.4 g/mL x 20. mL = 1868g.

489.7m / 53.061 s

We are dividing a measurement in m by a measurement in s. So the answer is in m/s.

So

489.7m / 53.061 s = 9.23 m/s

216.3 m/66.4 s

Same as above.

We are dividing a measurement in m by a measurement in s. So the answer is in m/s.

So

216.3 m/66.4 s = 3.26 m/s.

6 0
3 years ago
3) INITII equation y=-x+ 4<br> equation<br> W10<br> slope (m) = _<br> y-intercept =
vodomira [7]

Answer:

slope (m) = 1 and intercept = -4

Step-by-step explanation:

comparing with Y = mX - c

4 0
3 years ago
How does $100 gift card affect the measure of center of the data?<br> Attachment
Zinaida [17]
It increases the mean value of the prizes.
4 0
3 years ago
Please help me answer correctly pleasssse
Yanka [14]

Answer:

-1/2

Step-by-step explanation:

5 0
3 years ago
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