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Dmitry [639]
3 years ago
10

Nine times the input minus seven is equal to the output. If the input is -1, what is the output?

Mathematics
1 answer:
uranmaximum [27]3 years ago
7 0

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

f(x) = 9x - 7

f( - 1) = 9( - 1) - 7

f( - 1) =  - 9 - 7

f( - 1) =  - 16

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

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1. If there is a decrease of 31 percent, what decimal do we multiply by to get the amount after the decrease?
sdas [7]

answer

1.

Short answer: 0.69Take 100. 31% = 31, 100-31=69Of course, when you increase the result by 31 percent you do not get the 100 back. But that was not the question.But, for completeness what do I multiply by to get the number, when adding 31 percent, gives me the original number, it is 0.7633 (1/1.31)

2.

Your measure start at 16. So that is the basis (unless stated otherwise) upon which you reference the change.

That is:

16

20−16

is you fraction.

This gives:

16

4

→

16÷4

4÷4

=

4

1

For this to be a percentage we need the denominator such that it becomes 100. Thus we have:

4

1

→(

4

1

×1)→(

4

1

×

25

25

)=

100

25

To express this in the standard script form we have 25%

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