Explain why a change from 20 to 40 is a 100% increase, but a change from 40 to 20 is a 50% decrease.Increasing 20 to 40 is the same as increasing 20 by c. So, it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by one-half of c. So, it is a 50% decrease.
I don't understand how to fill in the blanks.

Answers

Answer 1

Answer:

I believe the answer you are looking for is:

Increasing 20 to 40 is the same as increasing 20 by 20 (or itself), so it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by 1/2 or by 20. So it is a 50% increase.

Basically, when going from 20 to 40, the number is being doubled, and when youre going from 40 to 20 you are cutting the number in half.

Answer 2

Answer:

Answer:

The first blank is 20 and the second is actually 40

Step-by-step explanation:

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Tom had 7/12 of a pizza. His little sister came along and took 2/5 of his pizza away. How much pizza does Tom have left?

Answers

To find the answer,we can first calculate how much her sister took away by multiplying the original amount he has to the amount her sister took.

Her sister has:
7/12×2/5
=7/30

We can then find the amount of pizza left by deducting the pizza he has to the answer we found above:

7/12-7/30
=35/60- 14/60
=21/60
=7/20

Therefore he has 7/20 of a pizza left.

An alternative way to find the answer:
7/12×(1-2/5)
=7/12×3/5
=7/20

Hope it helps!

Is the quotient of 2 nonzero integers always an integer explain

Answers

integers are whole numbers, they can be positive or negative....they are not decimals or fractions.

quotient means divide...so lets pick 2 non zero integers....2 and 3....now divide them.
2/3 = 0.66....so ur answer is FALSE..because we took 2 non zero integers and divided them, but we didn't get an integer as an answer.

Sometimes it is true...but not all the time.
2/4 = 2...here it is true
2/3 = 0.666 ...here, it is not

Using the graph below select all statements that are true