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3 years ago

9

A small pouch contains 8 black marbles, 5 white marbles, and 12 red marbles. What is the probability of picking a red then a bla

ck marble if you do not replace the first marble?

1 answer:

Alina [70]3 years ago

4 0

Answer:

8/600

Step-by-step explanation:

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Uppose jina has 9.23 pounds of seed. if it takes 7.1 pounds of seed to plant one acre of grass, how many acres of grass can be p

Ber [7]

Only 1 whole acre and it you want to be technical you can plant 1.3 acres. Just divide

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3 years ago

n a group of 40 people, 10 people are healthy. The 30 unhealthy people have either high blood pressure, high cholesterol, or bot

aalyn [17]

Answer:

If a person is randomly selected from this group, the probability that they have both high blood pressure and high cholesterol is P=0.25.

Step-by-step explanation:

We can calculate the number of people from the sample that has both high blood pressure (HBP) and high cholesterol (HC) using this identity:

$N(\text{HBP or HC})=N(\text{HBP})+N(\text{HC})-N(\text{HBP and HC})\\\\\\ N(\text{HBP and HC})=N(\text{HBP})+N(\text{HC})-N(\text{HBP or HC})\\\\\\ N(\text{HBP and HC})=15+25-30=10$

We can calculate the probability that a random person has both high blood pressure and high cholesterol as:

$P(\text{HBP and HC})=\dfrac{10}{40}=0.25$

3 0

3 years ago

Choose one fraction that can be placed in both boxes to make the two comparisons true.

Snezhnost [94]

<span>
1
4
<
3
4
>
A
1
8

B
3
12

C
1
2

D
6ddddddddddddddddddddd
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4 years ago

I need help please hurry.

Anarel [89]

Answer:the answer is the first

Step-by-step explanation:

Because the expression can be written as -10r2/2r2+4+5r/2r2+4+3/2r2+4

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3 years ago

How can I get to 75 using 7 5 6 3

eduard

63+5+7=75

Hope this helps

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3 years ago

Read 2 more answers