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Drupady [299]
3 years ago
15

A man standing 13 feet from the base of a lamppost casts a shadow 5 feet long. if the man is 6 feet tall and walks away from the

lamppost at a speed of 450 feet per minute, at what rate, in feet per minute, will the length of his shadow be changing?
Mathematics
1 answer:
Umnica [9.8K]3 years ago
7 0
10Find the height of the flag pole in m.1120Find d if b = 6, e = 15, and a = 8.8.25Find a if b = 11, e = 8, and d = 6.151.62.25A 3.2 m ladder is leaning against a wall with its foot 1.5 m from the wall. How far is a second ladder from the wall if it is 4.8 m long and parallel to the first ladder?20A person whose eye height is 1.6 m stands 0.8 m from a mirror. If the mirror is 10 m from a wall when the person sees the top of the wall, how tall is the wall?32.5A person whose eye height is 1.5 m stands 0.3 m from a mirror and sees the top of a building in the mirror. If the mirror is 6.5 m from the wall, how tall is the wall?8.4A person whose eye height is 1.2 m stands 0.4 m from a mirror. If the mirror is 2.8 m from the wall when the person sees the top of the wall, how tall is the wall?12.5A building casts a shadow 37.5 m long. If a metre stick casts a shadow 3 m long at the same time and location, how tall is the building?30A man is 6 feet tall, his shadow is 3.5 feet. He is standing next to a flagpole with a shadow of 17.5 feet. How tall is the flagpole?0.5<span>x/10 = 5/100</span>
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3. How many silver cars is the dealer expected to sell, on average, out of five cars? Interpret this expected value in context.
ivann1987 [24]

Answer:

E(X)= 0*0.27068 +1*0.40426+ 2*0.24151+3*0.07214+4*0.01077+5*0.00064=1.14998

So then the expected number of silver cars to sell for this case in the next five car sales is approximately 1.15 for the 23% of the total manufacturing cars produced.

Step-by-step explanation:

Assuming this problem :"23% of the cars a certain automaker manufactures are silver. Below is the probability distribution for the number of  silver cars sold by a car dealer in the next five car sales."

The distirbution is given by:

Num. Silver cars     0      |          1   |     2     |       3    |       4     |       5     |

Probability        0.27068|0.40426|0.24151|0.07214|0.01077|0.00064|

And assuming the following questions

What is the probability of selling at most three silver cars? Interpret this probability in context

For this case we just need to find this:

P(X\leq 3) = P(X=0) +P(X=1) +P(X=2)+P(X=3) = 0.27068+0.40426+0.24151+0.07214=0.98859

So then the probability of selling at most 3 silver cars in the next five car salesfrom the 23% of the total manufactured cars is 0.98859.

What is the probability of selling between and including one and four silver cars? Interpret this probability in  context.

For this case we just need to find this:

P(1 \leq X\leq 4) = P(X=1) +P(X=2) +P(X=3)+P(X=4) = 0.40426+0.24151+0.07214+0.01077=0.72868

So then the probability of selling between 1 and 4 silver cars in the next five car sales from the 23% of the total manufactured cars is 0.72868  in the next five car sales.

How many silver cars is the dealer expected to sell, on average, out of five cars? Interpret this expected value in context

For this case we can find the expected value on this way:

E(X)= 0*0.27068 +1*0.40426+ 2*0.24151+3*0.07214+4*0.01077+5*0.00064=1.14998

So then the expected number of silver cars to sell for this case in the next five car sales is approximately 1.15 for the 23% of the total manufacturing cars produced.

3 0
4 years ago
Shawn has a cherry tree in his yard. Currently the tree is 14 feet tall. That is 40% taller than it was when Shawn planted it. H
Phantasy [73]

It was 10 feet tall and grew 4 feet

5 0
3 years ago
the mendez family just bought a home for 180,000 if the value of the home increases at a rate of 3% per year, use an exponential
just olya [345]

Answer:

241904.9483

≈ 241905

Step-by-step explanation:

Given that,

current amount of house = 180,000

value of the home increases at a rate of 3% per year

To find,

approximate value of the home after 10 years using exponential function

<h2>Equation</h2><h2>a(1 + r)^t</h2>

where a is the amount of house = 180,000

r is the interest rate per annum = 3% = 3/100 = 0.03

t is the number of years = 10

180,000 (1+0.03)^10

180,000 (1.03)^10

241904.9483

≈ 241905

<h2 />

8 0
4 years ago
7x + 2 &gt; 30 <br><br> Help please
Alexeev081 [22]

The answer  to the question is x > 4


3 0
3 years ago
Read 2 more answers
Help me please :3 :) :)
densk [106]

Answer:

6

Step-by-step explanation:

because if it needs 4 for 120 then u would divide that and get 30 then divide 180 by 30 and get 6.

8 0
3 years ago
Read 2 more answers
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