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3 years ago

If each side of a regular pentagon equals 4 feet what is the perimeter

2 answers:

4 0

In a regular polygon, all of the sides have the same length.

Pentagons have five sides. If one of the sides in a regular pentagon is 4 feet, then the rest will also be four feet. 5 sides that are all 4 feet long totals up to a 20-foot perimeter.

Illusion [34]3 years ago

4 0

A regular polygon has all sides equal. There are 5 sides all equaling 4 ft, so 4⋅5= a 20 ft perimeter.

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For the equation 3x - 5y = -3, what is the value of y when x is 1?<br><br> 6/5<br> -6/5<br> 5/6

babymother [125]

Answer:

$\frac{-6}{5}$

Step-by-step explanation:

$3(1) - 5y = -3\\3 - 5y = -3\\-3 \\5y = -6\\/5 \\\\\frac{-6}{5}$

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3 years ago

Read 2 more answers

Does anyone know how to solve this?

KATRIN_1 [288]

Answer:

<30,-20>

Step-by-step explanation:

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2 years ago

Is Is y=2x+7 proportional?

inn [45]

Answer:

Step-by-step explanation:

Proportional must go through (0,0)

0 = 2(0) +7

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3 years ago

Does anyone know the answers please help!

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Answer:

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Step-by-step explanation:

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3 years ago

Blood type AB is the rarest blood type, occurring in only 4% of the population in the United States. In Australia, only 1.5% of

Umnica [9.8K]

Answer:

a. X is a binomial random variable with n = 50 and p = 0.04

b. Y is a binomial random variable with n = 40 and p = 0.015

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

X: the number of US residents (out of 50) with blood type AB.

Blood type AB is the rarest blood type, occurring in only 4% of the population in the United States

This means that $p = 0.04, n = 50$

Y: the number of Australians (out of 40) with blood type AB.

In Australia, only 1.5% of the population has blood type AB.

This means that $p = 0.015, n = 40$

Z: the total number of individuals (out of 90) with blood type AB.

Here

$n = 90, p = 0.04*\frac{50}{90} + 0.015*\frac{40}{90} = 0.0289$

Which of the following is true about the random variables X, Y, and Z?

Options a and b are true, while c is false.

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3 years ago