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3 years ago

Please help me. Explain this and give answer

Mathematics

1 answer:

Trava [24]3 years ago

8 0

Answer:

It's B) 60

Step-by-step explanation: Just look at the similar one above T.

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Please help me on here brainiest for best answer no wrong answers please

julia-pushkina [17]

Answer:

First question is 4,000

Second question is 2000

Step-by-step explanation:

You look at the point at which the graph lines meet and that is how you find you constant of proportionally.

6 0

3 years ago

A paper cup shaped like a cone has a diameter of 6 centimeters and a slant height of 7.5 centimeters. About how much paper is ne

liq [111]

Answer:

22.5 cm^2

Step-by-step explanation:

Amount of paper is going to be measured in area, so we want the surface area of the cone. Since it is a cub it doesn't have a base, so we don't need to count it.

Area of the cone without the base, or what is called the lateral area is pi*r*s where r is the radius and s is the slant height. and of course radius is d/2 where d is the diameter. so let's plug it in. We know diameter is 6 and slant height is 7.5

SA = pi * r * s

SA = pi * d/2 * s

SA = pi * 6/2 * 7.5

SA = 22.5 cm^2

So you will need 22.5 square centimeters of paper.

4 0

2 years ago

Polygon B is a scaled copy of Polygon A. What is the scale factor from A to B?

Travka [436]

Answer:

scale factor = 2

Step-by-step explanation:

Determine the ratio of corresponding sides, image to original

scale factor = $\frac{5}{2.5}$ = 2

3 0

3 years ago

Read 2 more answers

Assume that adults have IQ scores that are normally distributed with a mean of mu equals 100μ=100 and a standard deviation sigma

Ksivusya [100]

Answer:

51.60% probability that a randomly selected adult has an IQ between 86 and 114.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 114, \sigma = 86$

Find the probability that a randomly selected adult has an IQ between 86 and 114.

Pvalue of Z when X = 114 subtracted by the pvalue of Z when X = 86. So

X = 114

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{114 - 100}{20}$

$Z = 0.7$

$Z = 0.7$ has a pvalue of 0.7580

X = 86

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{86 - 100}{20}$

$Z = -0.7$

$Z = -0.7$ has a pvalue of 0.2420

0.7580 - 0.2420 = 0.5160

51.60% probability that a randomly selected adult has an IQ between 86 and 114.

3 0

4 years ago

Given the function g(x) = 6(4)x, Section A is from x = 0 to x = 1 and Section B is from x = 2 to x = 3.

Deffense [45]

<span>g(x) = 6(4)x, Section A is from x = 0 to x = 1. Your "6(4)x" needs to be written as

</span><span>g(x) = 6(4)^x, where the " ^ " indicates exponentiation.

The average rate of change of g(x) from x= 0 to x=1 is:

6(4)^1 - 6(4)^0 24 - 6
a.r.c. = ----------------------- = ----------- = 18 (answer)
1-0 1

Now do the same thing for x = 1 to x = 2.</span>

5 0

3 years ago