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DedPeter [7]
2 years ago
10

42 percent of what number is .21

Mathematics
1 answer:
Andre45 [30]2 years ago
4 0

Answer:

0.5

Step-by-step explanation:

0.42 x = 0.21

x=0.5

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The ratio of volume of a cone and a hemisphere of same base radius and height is?
aliya0001 [1]

Answer:

1/2

Step-by-step explanation:

Since it is given that the cone and the hemisphere have the same height, and since the height of a hemisphere would be equal to its radius, the cones height must also be equal to its base radius.

With this information we can use the respective volume formulas.

Hemisphere:  \frac{2}{3}πr^3

Cone:  \frac{1}{3}πhr^2

Since h (height) = r we can say the cone volume equals:

\frac{1}{3}πr^3

Now to find the ratio we divide the cone volume equation by the hemisphere volume equation

pi and r^3 cancels out from the division and we are left with

ratio = (1/3)/(2/3)

ratio = 1/2

7 0
3 years ago
Rex puts $5,000 in a savings account with a simple
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Answer:

Rex earns $250 in interest after 2 years.

Step-by-step explanation:

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3 years ago
g Which of the following is true about a p-value? Group of answer choices It measures the probability that the null hypothesis i
scZoUnD [109]

Answer:

It measures the probability of observing your test statistic, assuming the null hypothesis is true.

Step-by-step explanation:

The p-value, also known as the probability value <u>measures the probability of observing your test statistic, assuming the null hypothesis is true.</u>

A low p-value means a higher chance of the null hypothesis to be true.

It lies between 0 and 1. A small p-value indicates fewer chances of the null hypothesis to be true.

5 0
3 years ago
What is the answer to the word problem The cost of a gallon of orange juice is $3.50. What is the maximum number of containers y
Luda [366]

Answer: 4

Step-by-step explanation: you use division, or your calculator, divide $15.00 by $3.50 and you get 4.28, so you can by 4 full gallons with $1.00 left over!

5 0
3 years ago
How many days is 63 hours
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Answer:2.6 days

Step-by-step explanation:

i looked it up on google

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2 years ago
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