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natima [27]
3 years ago
6

Ummm how do you do this two questions?

Mathematics
1 answer:
guajiro [1.7K]3 years ago
8 0

Answer:

Here are the formulae you need. Just plug in the values you have and you will get your answers.

Area of a triangle: 1/2*base*height

Volume of a rectangular prism: length*width*height

Volume of a cylinder: pi*r^2*height

Step-by-step explanation:

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Divide 9x^2-6x+2 by (-1+3x)
natali 33 [55]

Answer:

A. 3x - 1 + [3x - 1]⁻¹

Step-by-step explanation:

Use Polynomial Long Division to arrive at this answer.

**[3x - 1]⁻¹ = 1\[3x - 1]

3 0
3 years ago
Please help! The radius of a sphere is claimed to be 3.0 inches, correct to within 0.01 inch. Use linear approximation to estima
Vilka [71]

Answer:

0,36π inches³ or simply 1.13 inches³

Step-by-step explanation:

In this case, first, we need to calculate the volume of the sphere with the formula:

V = 4πr³/3

Replacing the data we have:

V = 4π(3)³/3

V = 36 in³

Now that we have the volume we need to calculate the resulting error. In this case, using linear approximation we have to use the derivates of V and r, so we have the following:

If V = 4πr³/3

Then the derivate of V (dV) would be:

dV = 4π*3*r²/3 dr

Where dr is the error of radius so:

dV = 4π*r² dr

Solving for dV:

dV = 4*3.14*(3)²*(0.01)

dV = 1.13 in³

So at the end, we just report the volume of the sphere as

V = 36 ± 1 in³

dV =

3 0
3 years ago
Camille buys $50 worth of books at Target. She has a coupon for 10% off her entire purchase. What is the total cost of the books
sveta [45]

my answer olakia

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
In a certain country, the average age is 31 years old and the standard deviation is 4 years. If we select a simple random sample
KengaRu [80]

Answer: 0.0062

Step-by-step explanation:

Given : Mean : \mu=\ 31

Standard deviation :\sigma= 4

Sample size : n=100

Assume that age of people in the country is normally distributed.

The formula to calculate the z-score :-

z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

For x = 32

z=\dfrac{32-31}{\dfrac{4}{\sqrt{100}}}=5

The p-value = P(x\geq32)=P(z\geq5)

=1-P(z

Hence, the the probability that the average age of our sample is at least =0.0062

3 0
3 years ago
Fred works for $8.75 per hour. His regular hours are 40 hours per week and he gets time and a half for overtime. One week he wor
IrinaK [193]

8.75*40=350

time and a half=13.125

7.5 hours * 13.25= 98.4375

total 448.4375

5 0
3 years ago
Read 2 more answers
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