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3 years ago

I need this ASAP please.

Mathematics

1 answer:

Marrrta [24]3 years ago

4 0

Answer:

Step-by-step explanation:

I honestly dont know but see if your answer's on this site copy and paste this

A sphercial water tank has a diameter or 32 ft. How much water can the tank hold to the nearest gallon.(Hint 1ft=7.48) what is the weight of the water in the cylinder?

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Step-by-step explanation:

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2 years ago

Find the slope of each line. 1) y+3 ==*

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3 years ago

Please help! All the questions.

Yuri [45]

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3 years ago

9. What is the likelihood that a randomly selected couple's relationship survived between 90 and 150 days

andrew-mc [135]

Answer:

0.5818

Step-by-step explanation:

Suppose the average teenage romantic relationship is normally distributed with a mean number of 100 days with a standard deviation of 30 days.

Answer:

The z score is used to determine how many standard deviations that the raw score is above or below the mean. If the z score is positive then the raw score is above the mean and if it is negative then it is below the mean. It is given by:

$z=\frac{x-\mu}{\sigma}\\ \\where\ \mu=mean,\sigma=standard\ deviation, x=raw\ score$

Given that:

$\mu=100\ days,\sigma=30\ days\\\\For\ x=90\\\\z=\frac{90-100}{30} =-0.33\\\\For\ x=150\\\\z=\frac{150-100}{30} =1.67$

Therefore, from the normal distribution table, P(90 < x < 150) = P(-0.33 < z < 1.67) = P(z < 1.67) - P(z < -0.33) = 0.9525 - 0.3707 = 0.5818

7 0

3 years ago

A wheel has a diameter of cm.How many revolutions does it make to cover 154m?

SCORPION-xisa [38]

Answer:

154divided by tounsend

Step-by-step explanation:

second convert 154into mettres

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2 years ago