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kirill [66]
3 years ago
14

Help me once again please :)

Mathematics
2 answers:
oksano4ka [1.4K]3 years ago
4 0

Answer:

d =  5

Step-by-step explanation:

Pythagorean Theorem

a^2 = b^2 = c^2

3^2 + 4^2 = 9 + 16 = 25

sqrt.25 = 5

Tju [1.3M]3 years ago
4 0

Answer:

D. 5 feet

Step-by-step explanation:

You can imagine the ladder forming a right triangle with the wall. The two legs are 3 feet and 4 feet. Using the Pythagorean Theorem:

l=\sqrt{4^2+3^2}=\sqrt{16+9}=\sqrt{25}=5

Hope this helps!

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Tamiku [17]

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4 0
2 years ago
A manufacturer of piston rings for automobile engines frequently tests the width of the rings for quality control. Last week, a
kozerog [31]

Answer:

a) 74.0353 < u <  74.0367

b) 74.036 < u

Step-by-step explanation:

Given:

- Sample size n = 15

- Standard deviation s.d = 0.0001 in

- Sample mean x_bar = 74.036

Find:

A) Calculate the 99% two-sided confidence interval on the true mean piston diameter.

Solution:

- For 99% CI, We have a = 0.01 , and Z_a/2 = 2.58

------> (x_bar - Z_a/2*s.d / sqrt(n)) < u <  (x_bar + Z_a/2*s.d / sqrt(n))

------> (74.036 - 2.58*0.0001 / sqrt(15)) < u <  (74.036 + 2.58*0.0001 / sqrt(15))

------>                               74.0353 < u <  74.0367

Find:

B) Calculate the 95% one-sided lower confidence interval on the true mean piston diameter.

Solution:

- For 95% lower CI, We have a = 0.05 , and Z_a = 1.645

------> (x_bar - Z_a/2*s.d / sqrt(n)) < u

------> (74.036 - 1.645*0.0001 / sqrt(15)) < u

------>                               74.036 < u

5 0
3 years ago
What is the answer to this ?
Rudik [331]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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Rina8888 [55]
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So given angle in degree = -570 degree
3 0
3 years ago
Find the length of the unknown side. Round your answer to the nearest tenth.
Paraphin [41]

Answer:

<em>The correct option is:  11.5</em>

Step-by-step explanation:

Suppose, the length of the unknown side is  x

So, here the length of hypotenuse is 14 and the lengths of other two sides are 8 and x.

As the given triangle is right angle triangle, so <u>using Pythagorean theorem</u>, we will get.........

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<em>(Rounded to the nearest tenth)</em>

So, the length of the unknown side is 11.5

6 0
3 years ago
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