3 years ago

Select all the system of equations that have exactly one solution

Mathematics

1 answer:

Mariana [72]3 years ago

8 0

Answer:D

Step-by-step explanation:

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When focusing on wealth accumulation, the rate of return earned on an investment should be higher then the rate of inflation. Tr

Lena [83]

Answer:

True

Step-by-step explanation:

Anymore questions? :)

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3 years ago

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

A cable is 40 meters long. How long is the cable in decimeters?

AnnyKZ [126]

Hello,

1 meter is equal to 10 decimeters.

SO, if we convert 40 meters to decimeters, we multiply 40 meters by 10 decimeters, getting 400 decimeters.

Hope this helps!

May

6 0

3 years ago

Which of the following would be an acceptable first step in simplifying the expression

krek1111 [17]

Answer: A

Step-by-step explanation: Because it can be simplified twice.

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2 years ago

Write the following in decimal format: 364 1000

levacccp [35]

Answer: 3.64, 10.00

Step by step:

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3 years ago