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amid [387]
3 years ago
6

A car salesman is stringing banners from the top of the roof to a fence pole 20 feet away. The top of the roof is 29 feet from t

he ground. The fence pole is 18 feet high. How many feet of banner rope does he need to reach from the rooftop to the fence pole?
Mathematics
1 answer:
7nadin3 [17]3 years ago
5 0

Answer:

20.88 feet

Step-by-step explanation:

First sketch your problem

identify the right angle triangle in the sketch with a=20ft, b=6 ft and c=?

apply Pythagorean relation, a²+b²=c²

=20²+6²=c²

c²=436

c=20.88 ft

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A box contains 65 balls numbered from 1 to 65. If 9 balls are drawn with replacement, what is the probability that at least two
lesya692 [45]

Answer:

Probabilty= 7.66*10^-3

Step-by-step explanation:

A box contains 65 balls numbered from 1 to 65.

9 balls are drawn with replacement.

Probabilty of selecting a number = 1/65

Probabilty of selecting a number

= 0.0154

Probabilty of at least 2 numbers out of 9 selected to have Same number

Probabilty= 9C2(0.0154)^2(0.9846)^7

Probabilty= 7.66*10^-3

6 0
2 years ago
PLS HELP MEEEEE!!!!!!!!!!!!
Andreyy89

Answer:

(1,2)

Step-by-step explanation:

The solution is the point where the two lines intersect at.

In other words the point where the two lines make an x.

Hope this helps ya!!

6 0
2 years ago
Read 2 more answers
9. Your mathematics instructor claims that, over the years, 88% of his students have said that math is their favorite class. In
Tatiana [17]

Answer:

Step-by-step explanation:

For the null hypothesis,

H0: p = 88

For the alternative hypothesis,

Ha: p < 88

Considering the population proportion, probability of success, p = 0.88

q = probability of failure = 1 - p

q = 1 - 0.88 = 0.12

Considering the sample,

Sample proportion, P = x/n

Where

x = number of success = 21

n = number of samples = 32

P = 21/32 = 0.66

We would determine the test statistic which is the z score

z = (P - p)/√pq/n

z = (0.66 - 0.88)/√(0.88 × 0.12)/32 = - 3.83

The corresponding p value would be determined by looking at the normal distribution table for the area below the z score. Therefore,

P value = 0.00006

8 0
3 years ago
If F is the function defined by F(x)=3x−1 find the solution set for F(x)=−7.
sveticcg [70]

Answer:

C is your answer.

Step-by-step explanation:

Hope is right, you're welcome, and good luck on your work.

please don't forget to click in the ❤, and on the ⭐.

5 0
3 years ago
Read 2 more answers
PLSSSS HELP MEEE IM FIXING MY GRADES 2 to the power of 2 + 2(4 − 2)
Vitek1552 [10]

Answer:

8

Step-by-step explanation:

2^2+2(4-2)

4+8-4

8

Hope this helps :D

4 0
2 years ago
Read 2 more answers
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