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tester [92]
2 years ago
8

Suppose that the breaking strength of a rope (in pounds) is normally distributed, with a mean of 100 pounds and a standard devia

tion of 17. What is the probability that a certain rope will break before being subjected to 130 pounds?
Mathematics
1 answer:
EleoNora [17]2 years ago
8 0

Answer:

0.961

Step-by-step explanation:

To answer this, find the area under the standard normal curve to the left of 130 pounds:

Using the function normalcdf( on a TI calculator, we get:

normalcdf(-1000, 130, 100, 17) = 0.961

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A stack of boards is 24 inches high.The thickness of each board is 3/8 inch. How many boards are in the stack?
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Step-by-step explanation:

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3 years ago
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Denise spent $3.45 on snacks every day for 11 days. What is the amount of money Denise spent on these snacks?
Ipatiy [6.2K]

Answer:

Your Answer would be C: $37.95

Step-by-step explanation:

Take 3.45 Multiply by 11 And get your answer

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If a=-6 and b=-10 evaluate the following:<br>a + 6​
ser-zykov [4K]

Answer:

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Step-by-step explanation:

+ - = -

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3 years ago
?<br><br>2 to the 3rd power - 5 x (6 + 4) ÷ 2<br><br>show your work​
Delvig [45]

Answer:

-17

Step-by-step explanation:

2^3 - 5 * (6 + 4) ÷ 2

Following PEMDAS, we must focus on the parenthesis first.

2^3 - 5 * (6 + 4) ÷ 2

2^3 - 5 * (10) ÷ 2

Now we will focus on the exponent:

2^3 - 5 * 10 ÷ 2

8 - 5 * 10 ÷ 2

Now Multiplication/Division.

This is where you must follow the order in the equation where you see the multiplication sign first, so you multiply first.

8 - 5 * 10 ÷ 2

8 - 50 ÷ 2

Next, Divide:

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Subtract:

8 - 25

-17

2^3 - 5 * (6 + 4) ÷ 2 = -17.

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