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3 years ago

Why is it useful to factor polynomial expressions for a given scenario?

Mathematics

1 answer:

White raven [17]3 years ago

3 0

To determine the roots or the zeros of the polynomial. These are the x-intercepts.

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Solve the equation 9r - 2 = 16 for r. A) 1 B) 2 C) 4 D) 6

yaroslaw [1]

9r - 2 = 16

9r = 16 + 2

9r = 18

r = 2

Answer : B) 2

6 0

3 years ago

Can someone help me please

docker41 [41]

0 there are no odd number 1-15

5 0

3 years ago

Read 2 more answers

Write and evaluate the definite integral that represents the volume of the solid formed by revolving the region about the x-axis

guapka [62]

Answer: V = $\frac{64}{3}\pi$

Step-by-step explanation: A solid formed by revolving the region about the x-axis can be considered to have a thin vertical strip with thickness Δx and height y = f(x). The strip creates a circular disk with volume:

V = $\pi. y^{2}.$ Δx

Using the Disc Method, it is possible to calculate all the volume of these strips, giving the volume of the revolved solid:

V = $\int\limits^a_b {\pi. y^{2} } \, dx$

Then, for the region generated by y = - x + 4:

V = $\int\limits^4_0 {\pi.(-x+4)^{2} } \, dx$

V = $\pi.\int\limits^4_0 {(x^{2}-8x+16)} \, dx$

V = $\pi.(\frac{x^{3}}{3}-4x^{2}+16x )$

V = $\pi.(\frac{4^{3}}{3}-4.4^{2}+16.4 - 0 )$

V = $\frac{64}{3}.\pi$

The volume of the revolved region is V = $\frac{64}{3}.\pi$

8 0

3 years ago

Write these numbers in standard form.

pychu [463]

Answer:

Here are the answers I got I hope this is correct!! :)

Step-by-step explanation:

A) 6 x 10^3

B) 4 x 10^8

C) 70 x 10^3

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I hope this helped you sorry for the first try c:

4 0

3 years ago

Graph the equation y = 4x -2.

9966 [12]

I have attached the graph

4 0

3 years ago