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3 years ago

11

What is 13+21? A). 53 B).-34 C).27 D).34

2 answers:

olga nikolaevna [1]3 years ago

8 0

The answer for 13+21 =34

kow [346]3 years ago

7 0

D).34 is the answer for 13+21

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Mr Frank purchased 5_1/4 pounds of rocks. He used 3/5 of a pound on one aquarium. He then split the rest of the rocks between hi

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1_11/20 pounds, or 1.55 pounds.

Step-by-step explanation:

Since at the beginning, he had 5 1/4 pounds and used 3/5, we subtract the amount of pounds. We are then left with 93/20 pounds, which he then splits among 3 containers. Dividing by three, we then get 31/20 pounds in one aquarium, or 1 11/20 pounds in each aquarium or 1.55 pounds.

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2 years ago

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Answer:

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Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 500$

The standard deviation is $\sigma = 100$

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$P(350 < X 650 ) = P(\frac{ 350 - 500}{ 100}$

Generally

$\frac{X - \mu }{\sigma } = Z (The \ standardized \ value \ of \ X )$

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$P(350 < X 650 ) = P(-1.5$

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From the z-table $P(Z < -1.5 ) = 0.066807$

and $P(Z < 1.5 ) = 0.93319$

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3 years ago

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2 years ago

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Answer:

875

Step-by-step explanation:

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3 years ago

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