3 years ago

Come up with a rule for subtracting integers

1 answer:

7 0

Answer: To add integers that have the same sign, keep the same sign and add the absolute value. To add with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute valye from the largest.

Step-by-step explanation:

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Vesna [10]

The answer is C. Here you go.

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3 years ago

X is a normally Distributed random variable with a standard deviation of 4.00. Find the mean of X when 64.8% of the area lies to

Cerrena [4.2K]

Answer:

Step-by-step explanation:

σ = 4 ; μ =?

8.52 to the left of X

P(X < 8.52) = 64.8%

P(X < 8.52) = 0.648

Using the Z relation :

(x - μ) / σ

P(Z < (8.52 - μ) / 4)) = 0.648

The Z value of 0.648 of the lower tail is equal to 0.38 (Z probability calculator)

Z = 8.52 - μ / 4

0.38 = 8.52 - μ / 4

0.38 * 4 = 8.52 - μ

1.52 = 8.52 - μ

μ = 8.52 - 1.52

μ = 7

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3 years ago

Chuck drops a rock from a height of 70 m. How long will it take the rock to hit the ground? Use the formula h(t)=−4.9 t 2 + v o

Pachacha [2.7K]

That's the best I could do. I hope it helped

7 0

3 years ago

Read 2 more answers

Please help and please give explanation

Yuki888 [10]

Answer:

cylinder surface area = 201.06in²

surface area of cone = 56.56in.²

Step-by-step explanation:

cylinder surface area formula = 2πrh + 2πr²

refer the pic

cone surface area formula = πr ( r + √h² + r² )

refer the sec pic

surface area of the solid

= ( 201.06 + 56.56 ) in.²

= 257.62in.²

= 258in.²

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2 years ago

Will give brainliest

morpeh [17]

Answer:

zfhogdakzgf

Step-by-step explanation:

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3 years ago