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Akimi4 [234]
2 years ago
8

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

Mathematics
2 answers:
Paraphin [41]2 years ago
6 0

Answer:

1. 0.69

2. 1.16

Step-by-step explanation:

1.

Decrease of 31% = 100% - 31% = 69%

Convert 69% to a decimal = 69/100 = 0.69

2.

Increase of 16% = 100% + 16% = 116%

Convert 116% to a decimal = 116/100 = 1.16

sdas [7]2 years ago
3 0

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%

お役に立てば幸いです

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Calculate 8 ∙ 10-4 divided by 2 ∙ 102. (box after the "10" in answer is for the exponent.). ∙ 10
Korolek [52]

Given problem: \frac{8*10^{-4}}{2*10^2}.

Solution: We can see that first we have 8 and 2 numbers in front of 10's powers.

So, we need to simplify 8 over 2 first.

If we divide 8 by 2, we get 4.

Now, let us work on 10's and their powers.

10^{-4} is being divided by 10^{2}.

We can apply quotient rule of exponents remaining part.

According to quotient rule of exponents, \frac{a^m}{a^n}=a^{m-n}

If we apply same rule, we need to subtract exponents of 10's.

\frac{10^{-4}}{10^2}=10^{-4-(-2)}

If we simplify exponent part -4-(-2), it will give us -4+2 =-2.

So, 10^{-4-(-2)}=10^{-2}

And final answer would be 4 \times 10^{-2}.


6 0
3 years ago
PLEASE ANSWER FAST!! Find the 29th term of this sequence:-121,-108,-95,-82...
Julli [10]

Answer:

The 29th term is

<h2>243</h2>

Step-by-step explanation:

The above sequence is an arithmetic sequence

For an nth term in an arithmetic sequence

U(n) = a + ( n - 1)d

where n is the number of terms

a is the first term

d is the common difference

From the question

a = - 121

d = -108 -- 121 = - 108 + 121 = 13

Since we are finding the 29th term

n = 29

The 29th term of the sequence is

U(29) = - 121 + ( 29 - 1) 13

= -121 + 28(13)

= -121 + 364

The final answer is

<h2>243</h2>

Hope this helps you

4 0
3 years ago
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Vinil7 [7]

Step-by-step explanation:

K=12 if you want explanation i will

8 0
3 years ago
Read 2 more answers
X-30% is 12. What is X?
skad [1K]
If i'm not wrong,i think the answer is:

30%=0.3
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5 0
3 years ago
Read 2 more answers
What is the third quartile of this data set 20,21,24,25,28,29,35,37,39,42,44
dezoksy [38]

Answer:

The third quartile would be <u>39</u>.

Step-by-step explanation:

• Since the numbers are already in order, the next step would be to find the median:

- The <u>median</u> is the middle number; found by ordering all data points and picking out the one in the middle.

  • The median would be 29.

• The <u>first quartile</u>, is denoted as Q1 and is the middle number that falls between the smallest value of the data set and the median.

  • The first quartile would be 24.

• The <u>third quartile</u>, is denoted as Q3 and is the median of the upper half of the data set.

  • The third quartile would be 39.

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6 0
3 years ago
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