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3 years ago

Plz help me due today

Mathematics

1 answer:

Blababa [14]3 years ago

3 0

Answer:

2976 in³

Step-by-step explanation:

Stool volume = upper smaller prism + Lower bigger prism

Stool volume = 8 x 6 x 12 + 20 x 12 x 10 = 576 + 2400 = 2976

check: volume = 20 x 12 x 16 - 12 x 12 x 6 = 2976

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What expression is equivalent to twice B plus the sum of 2 and b?

ikadub [295]

Answer: . 2 + 3b

Step-by-step explanation: Twice b is 2b. Sum of 2 and b is 2 + b. Add them all together and combine like terms. You get your answer.

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3 years ago

Every positive real number has a positive and a negative square root, the ________ root is called the principal root. *

fomenos

9514 1404 393

Answer:

B) positive

Step-by-step explanation:

For even-index roots, which may be either positive or negative, the positive root is called the principal root.

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3 years ago

The monthly electrical utility bills of all customers for the Far East Power and Light Company are known to be normally distribu

omeli [17]

Answer: 0.9996

Step-by-step explanation:

Given : The monthly electrical utility bills of all customers for the Far East Power and Light Company are known to be normally distributed with a mean $\mu=$\ 87.00$

Standard deviation : $\sigma=$\ 36.00$

Sample size : n=100

Let X be the random variable that represents the electricity utility bill for a randomly selected month .

z-score : $z=\dfrac{X-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

For X = $75.00

$z=\dfrac{75.00-87.00}{\dfrac{36}{\sqrt{100}}}\approx-3.33$

Now, the probability that the average bill for those sampled will exceed $75.00 will be :-

$P(X>75)=P(z>-3.33)=1-P(z\leq-3.33)\\\\=1- 0.0004342=0.9995658\approx0.9996$

Hence, the probability that the average bill for those sampled will exceed $75.00 =0.9996

3 0

4 years ago

What is the missing length?

Lostsunrise [7]

Answer:

DONT CLICK THE LINK ITS A VIRUS

Step-by-step explanation:

7 0

3 years ago

Could somebody help me please

mestny [16]

Answer:

Integers; -10

Step-by-step explanation:

Numbers that include zero, counting numbers and negative counting numbers are integers.

Whenever someone owes money to another, this is represented by adding a negative sign.

7 0

3 years ago