2 years ago

12.5 feet long weighs 158 pounds. How much does a piece of the same steel pipe 18.75

Mathematics

1 answer:

AveGali [126]2 years ago

4 0

Answer:

237 pounds

Step-by-step explanation:

237 pounds

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Deon earns $91 washing 7 dogs. At this rate, how many dogs did Deon wash to earn $117?

mamaluj [8]

$91/ 7 = $13 per dog
$117/$13 = 9 dogs
He washed 9 dogs

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2 years ago

The mass of a species of mouse commonly found in houses is normally distributed with a mean of 20.2 grams with a standard deviat

Sophie [7]

Answer:

12.1%

Step-by-step explanation:

Given that:

Mean (μ) = 20.2 grams and standard deviation (σ) = 0.18 grams.

The z score is a score used to determine the number of standard deviations by which the raw score is above or below the mean. A positive z score means that the raw score is above the mean and a negative z score means that the raw score is below the mean. It is given by:

$z=\frac{x-\mu}{\sigma}$

a) For x < 19.99 g:

$z=\frac{x-\mu}{\sigma}\\\\z=\frac{19.99-20.2}{0.18} \\\\z=-1.17$

From the normal distribution table, P(x < 19.99) = P(z < -1.17) = 0.1210 = 12.1%

The probability that a randomly chosen mouse has a mass of less than 19.99 grams is 12.1%

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2 years ago

A student estimated that it would take 3 hours to write a

lidiya [134]

The student had a 40% error estimate

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2 years ago

What is the simplified expression for

Anni [7]

Answer:

Step-by-step explanation:

$3a^2+9ab+5-4a^2-4ab+3\qquad\text{combine like terms}\\\\=(3a^2-4a^2)+(9ab-4ab)+(5+3)\\\\=-a^2+5ab+8$

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3 years ago

Can the following two triangles be proven congruent through AAS?

a_sh-v [17]

Answer:

C. YES

Step-by-step explanation:

If two angles and the non-included side of one triangle are equal to the corresponding angles and side of another triangle, the triangles are congruent.

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2 years ago