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3 years ago

15

I will give brainliest i got fish

2 answers:

Paul [167]3 years ago

5 0

-1/3 or 1/7 if it only tells you to pick one question then it’s -1/3

Gemiola [76]3 years ago

4 0

It is 1/7 hope it helps

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Pierre drove his motorcycle 120 miles in 3 hours. At this rate how many miles can he drive in 8 hours?

Fed [463]

Set up a proportion having 120 over 3 = x over 8
cross multiply with 3x = 960
then divide by 3
the answer is 320 miles

8 0

3 years ago

A real estate agent has 17 properties that she shows. She feels that there is a 50% chance of selling any one property during a

Likurg_2 [28]

Answer:

0.0011 = 0.11% probability of selling less than 3 properties in one week.

Step-by-step explanation:

For each property, there are only two possible outcomes. Either they are sold, or they are not. The chance of selling any one property is independent of selling another property. This means that the binomial probability distribution is used to solve this question.

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.

A real estate agent has 17 properties that she shows.

This means that $n = 17$

She feels that there is a 50% chance of selling any one property during a week.

This means that $p = 0.5$

Compute the probability of selling less than 3 properties in one week.

This is

$P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)$

In which

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

$P(X = 0) = C_{17,0}.(0.5)^{0}.(0.5)^{17} \approx 0$

$P(X = 1) = C_{17,1}.(0.5)^{1}.(0.5)^{16} = 0.0001$

$P(X = 2) = C_{17,2}.(0.5)^{2}.(0.5)^{15} = 0.0010$

$P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2) = 0 + 0.0001 + 0.0010 = 0.0011$

0.0011 = 0.11% probability of selling less than 3 properties in one week.

5 0

3 years ago

PLS HELP DUE SOON FIRST CORRECT ANSWER GETS BRAINLIEST NO LINKS

Rus_ich [418]

Answer:

160 cubic inches

Step-by-step explanation:

3 0

3 years ago

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A particle moves along the x-axis with position function s(t) = ecos(x). How many times in the interval [0, 2π] is the velocity

Ede4ka [16]

Answer:

It goes to zero three times

Step-by-step explanation:

s(t) = e^ cos(x)

To find the velocity, we have to take the derivative of the position

ds/dt = -sin x e^ cos x dx/dt

Now we need to find when this is equal to 0

0 = -sin x e^ cos x

Using the zero product property

-sin x=0 e^cos x= 0

sin x = 0

Taking the arcsin of each side

arcsin sinx= arcsin 0

x = 0 ,pi, 2 pi

e^cos x= 0

Never goes to zero

6 0

3 years ago

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Simplify please (3^2 x^4)^5

lubasha [3.4K]

Answer:

59049x^20

Step-by-step explanation:

3^2=9

9^5= 59049

x^4*5= x^20

8 0

3 years ago

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