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3 years ago

Okay this is the last one thank you for the help

Mathematics

2 answers:

salantis [7]3 years ago

7 0

Answer:

the area is quadrupled

Step-by-step explanation:

Consider the area (A) of the circle using both radii

r = 3

A = π × 3² = 9π

r = 6

A = π × 6² = 36π ← 4 times the area with r = 3

prohojiy [21]3 years ago

3 0

Solution: It would be quadrupled because radius controls to axis (height & width) meaning if you double two (2 x 2) you get four (4).

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6/7*(11/18-5/12) pls help: fraction form, please

olasank [31]

Step-by-step explanation:

$\frac{6}{7} \times ( \frac{11}{18} - \frac{5}{12} )$

$\frac{6}{7} \times ( \frac{7}{36} )$

$\frac{42}{252}$

7 0

1 year ago

Finn changes his mind and, from now on, decides to take the normal route to work everyday. On any given day, the time (in minute

Margaret [11]

Answer:

The 33rd percentile of the time it takes Finn to get to work on any given day is 31.04 minutes.

There is a 61.92% probability that Finn took more than 40.5 minutes to get to work on the first day or more than 38.5 minutes to get to work on the second day.

Step-by-step explanation:

This can be solved by the the z-score formula:

On a normaly distributed set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a value X is given by:

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

Each z-score value has an equivalent p-value, that represents the percentile that the value X is:

The problem states that:

Mean = 35, so $\mu = 35$

Variance = 81. The standard deviation is the square root of the variance, so $\sigma = \sqrt{81} = 9$ .

Find the 33rd percentile of the time it takes Finn to get to work on any given day. Do not include any units in your answer.

Looking at the z-score table, $z = -0.44$ has a pvalue of 0.333. So what is the value of X when $z = -0.44$ .

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

$-0.44 = \frac{X - 35}{9}$

$X - 35 = -3.96$

$X = 31.04$

The 33rd percentile of the time it takes Finn to get to work on any given day is 31.04 minutes.

Over the next 2 days, find the probability that Finn took more than 40.5 minutes to get to work on the first day or more than 38.5 minutes to get to work on the second day.

$P = P_{1} + P_{2}$

$P_{1}$ is the probability that Finn took more than 40.5 minutes to get to work on the first day. The first step to solve this problem is finding the z-value of $X = 40.5$ .

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

$Z = \frac{40.5 - 35}{9}$

$Z = 0.61$

$Z = 0.61$ has a pvalue of 0.7291. This means that the probability that it took LESS than 40.5 minutes for Finn to get to work is 72.91%. The probability that it took more than 40.5 minutes if $P_{1} = 100% - 72.91% = 27.09% = 0.2709$

$P_{2}$ is the probability that Finn took more than 38.5 minutes to get to work on the second day. Sine the probabilities are independent, we can solve it the same way we did for the first day, we find the z-score of

$X = 38.5$

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

$Z = \frac{38.5 - 35}{9}$

$Z = 0.39$

$Z = 0.39$ has a pvalue of 0.6517. This means that the probability that it took LESS than 38.5 minutes for Finn to get to work is 65.17%. The probability that it took more than 38 minutes if $P_{1} = 100% - 65.17% = 34.83% = 0.3483$

So:

$P = P_{1} + P_{2} = 0.2709 + 0.3483 = 0.6192$

There is a 61.92% probability that Finn took more than 40.5 minutes to get to work on the first day or more than 38.5 minutes to get to work on the second day.

7 0

3 years ago

Classify each triangle by its angles and sides. ABE BEC DEF CDF

lapo4ka [179]

Answer:

scalene right

isosceles obtuse

equilateral equilateral

scalene acute

7 0

2 years ago

Use the law of exponets to rewrite (5x3)^7

topjm [15]

Answer: 5^7 x 3^7
You could also write 15^7

7 0

2 years ago

((5^(3))^(5))/(5^(7))

Norma-Jean [14]

Answer:

Step-by-step explanation:

equals 48 trust me ive had that question

6 0

2 years ago

Read 2 more answers

Okay this is the last one thank you for the help​

Okay this is the last one thank you for the help