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Mice21 [21]
3 years ago
13

The temperature in Hokkaido in Japan was -8 degrees at 24:00 one night. By 09:00 the temperature had risen 12 degrees. What was

the temperature at 9 am?
Mathematics
1 answer:
likoan [24]3 years ago
5 0

Answer:

4

Step-by-step explanation:

On a number line you will got to -8 and go up 12 and you would get 4

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Which methods could you use to calculate the y-coordinate of the midpoint of vertical line segment with endpoints at (0,0) and (
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Midpoint formula.

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This is one method. A list wasn't provided.

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What is 7/4 plus -1/2 plus 2/3? And what’s the answer
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1.85

Step-by-step explanation:

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Becky’s square living room needs new carpet. She needs about 200 square feet of carpet to cover the floor. What are the approxim
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8 0
3 years ago
Read 2 more answers
A city council consists of seven Democrats and five Republicans. If a committee of four people is selected, find the probability
Hoochie [10]

Answer:

The probability  of selecting two Democrats and two Republicans is 0.4242.

Step-by-step explanation:

The information provided is as follows:

  • A city council consists of seven Democrats and five Republicans.
  • A committee of four people is selected.

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

{n\choose k}=\frac{n!}{k!\times (n-k)!}

Compute the number of ways to select four people as follows:

{12\choose 4}=\frac{12!}{4!\times (12-4)!}=495

Compute the number of ways to selected two Democrats as follows:

{7\choose 2}=\frac{7!}{2!\times (7-2)!}=21

Compute the number of ways to selected two Republicans as follows:

{5\choose 2}=\frac{5!}{2!\times (5-2)!}=10

Then the probability  of selecting two Democrats and two Republicans as follows:

P(\text{2 Democrats and 2 Republicans})=\frac{21\times 10}{495}=0.4242

Thus, the probability  of selecting two Democrats and two Republicans is 0.4242.

6 0
2 years ago
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