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3 years ago

I need help ASAP! Pease help me understand this

Mathematics

1 answer:

daser333 [38]3 years ago

8 0

Answer:

25 meters

Step-by-step explanation:

Imagine a segment extending vertically down from the left tree to the right tree.

That would make the segment be 25-10, or 15.

Then, we have a right triangle and we can solve for the hypotenuse, which is the length of the rope. (The bottom of the triangle is 20, and the leg is 15.)

We can use the pythag theorem: 15^2+20^2=c^2

c^2=225+400

c^2=625

c=25

Therefore, 25 meters

I hope the helped! If you have any further questions or concerns, please feel free to comment them below!

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3 years ago

Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 141 millimeters,

tiny-mole [99]

Answer:

Probability that the sample mean would be greater than 141.4 millimetres is 0.3594.

Step-by-step explanation:

We are given that Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 141 millimetres, and a standard deviation of 7.

A random sample of 39 steel bolts is selected.

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The z score probability distribution for sample mean is given by;

Z = $\frac{ \bar X-\mu}{\frac{\sigma}{\sqrt{n} } } }$ ~ N(0,1)

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Now, Percentage the sample mean would be greater than 141.4 millimetres is given by = P( $\bar X$ > 141.4 millimetres)

P( $\bar X$ > 141.4) = P( $\frac{ \bar X-\mu}{\frac{\sigma}{\sqrt{n} } } }$ > $\frac{141.4-141}{\frac{7}{\sqrt{39} } } }$ ) = P(Z > 0.36) = 1 - P(Z $\leq$ 0.36)

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Can you help me pleaseeeeeeeeeee

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This is so wasy n u dk how to do it u just add 3 my god

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