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prisoha [69]
3 years ago
12

"when reading a cd-rom disk 2.8 cm from its center the rotational speed is 726 rpm what is the rpm at 5.2cm

Mathematics
1 answer:
wolverine [178]3 years ago
5 0

9514 1404 393

Answer:

  726 rpm

Step-by-step explanation:

The angular speed is not dependent upon the radius. The rotational speed is 726 rpm at any radius.

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Reika [66]
I think it would be 88 square inches
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3 years ago
The second side of a triangular deck is 4 feet longer than the shortest side, and the third side is 4 feet shorter than twice th
xxTIMURxx [149]
We don’t know the value of the shorter side, so we will categorize it as x. Side 2 is just 4 feet longer than x, so we would add 4 on to it. Side 3 has double the x, so we would multiply it be 2 for 2x, and subtract the 4 feet from it.

Side 1: x
Side 2: x + 4
Side 3: 2x - 4

If the perimeter is 64 feet, then all of the sides have to add up to it. Therefore, first we add all of the side lengths up:

x + x + 4 + 2x - 4 = 4x.

Now we put 4x, the amount of all these sides added up, equal to the perimeter of 64.

4x = 64. Divide both sides by 4 to get x by itself.
x = 16.

Now that we know x is 16, we will substitute it in for all the side lengths’ equations.

We know that Side 1 was just x, so that will be 16. Since Side 2 was 4 more than x, we’d do 16 + 4 = 20. We substitute 16 in for x in Side 3’s equation: 2(16) - 4 = 32 - 4 = 28.

Therefore, the final lengths of all the sides are:

Side 1: 16
Side 2: 20
Side 3: 28
5 0
3 years ago
Find the cost function for the marginal cost function. C(x) =0.06 e 0.08x; fixed cost is $10 C(x)=_______
sashaice [31]

Answer:

The cost function for C(x) = 0.06\cdot e^{0.08\cdot x} is c(x) = 0.75\cdot e^{0.08\cdot x}+10.

Step-by-step explanation:

The marginal cost function (C(x)) is the derivative of the cost function (c(x)), then, we should integrate the marginal cost function to find the resulting expression. That is:

c(x) = \int {C(x)} \, dx + C_{f}

Where:

C_{f} - Fixed costs, measured in US dollars.

If we know that C(x) = 0.06\cdot e^{0.08\cdot x} and C_{f} = \$\,10, then:

c(x) = 0.06\int {e^{0.08\cdot x}} \, dx + 10

c(x) = 0.75\cdot e^{0.08\cdot x}+10

The cost function for C(x) = 0.06\cdot e^{0.08\cdot x} is c(x) = 0.75\cdot e^{0.08\cdot x}+10.

3 0
3 years ago
In a sample of 144 cookies approximately 12% are broken. how many cookies in the sample are broken? round answer to nearest cook
sattari [20]
144 x 17% (or .17) = 17.28
Estimate 17. 3 or 17 (I’ll let you figure it out which one )
4 0
3 years ago
Bab can’t do quick mafs. Help?
iragen [17]

Answer:

(5, -3)

Step-by-step explanation:

Midpoint formula:

(x,y ) = (\frac{x_{1}+x_{2}  }{2} ,\frac{y_{1} +y_{2} }{2})\\= (\frac{3+7}{2}, \frac{-1+(-5)}{2} )\\=(\frac{10}{2}, \frac{-6}{2} )\\= (5,-3)

5 0
3 years ago
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