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2 years ago

Please answer thank you !!!!!

Mathematics

1 answer:

KonstantinChe [14]2 years ago

8 0

Answer:

-7x^3+8x^2+x-5

Step-by-step explanation:

We are simply adding the two functions:

f(x) + g(x) = (2x^2-5x^3+x-7) + (6x^2-2x^3+2) = 8x^2-7x^3+x-5 = -7x^3+8x^2+x-5

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What kind of angles are ADB and BDC

Taya2010 [7]

Answer:

Triangles.

Step-by-step explanation:

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3 years ago

(3,-2)<br>tell what point is located at each ordered pair

zvonat [6]

Answer:

x = 3

y = -2

Step-by-step explanation:

I honestly don't understand the question I think you made a mistake writing it but I think I have an idea about it.

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3 years ago

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The radius AND height of a cylinder are each doubled. What is the new volume?

Naya [18.7K]

The volume of a cylinder is given by

$V = \pi hr^2$

Let $h\mapsto 2h$ and $r\mapsto 2r$

The new volume becomes

$V = \pi(2h)(2r)^2 = \pi\cdot 2h \cdot 4r^2 = 8\pi hr^2$

So, the new volume is 8 times the original volume. In fact, volume scales linearly with the height and quadratically with the radius.

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3 years ago

The perimeter of a parallelogram is 15.42 cm. The length of its sides is 2.93. What isthe lengths of its other sides?

KATRIN_1 [288]

Paaralellogram has 2 pairs of paralell sidess
therefor there are 2 pairs of sides with same legnth
perimiter=legnth+widht+legnth+width since the opposite sides ar the same sinnce paralell
perimiter=2legnth +2width

perimiter=15.42
legnth=2.93
subsitute
15.42=2(2.93)+2width
15.42=5.86+2width
subtract 5.86 from both sides
9.56=2width
divide both sides by 2
4.78

legth of ther side is 4.78 cm

6 0

3 years ago

Pls help me if u can

mario62 [17]

Answer:

523.33 cm³

Step-by-step explanation:

Formula of volume of sphere

$= \frac{4}{3} \pi {r}^{3}$