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Gemiola [76]
3 years ago
11

If 9% of a number equals 10, find 90% of that number.

Mathematics
1 answer:
Levart [38]3 years ago
5 0

Answer:

100

Step-by-step explanation:

In this problem 10 represents 9% of a number. So, to find 90% you must multiply 10 by 10. You do this because 9% times 10 equals 90%; therefore, 100 must be 90%.

This can also be proven through cross multiplication. To set up a proportion put the percent over the number like, \frac{9}{10}=\frac{90}{x}. Then cross multiply to get the equation, 9x=900. Finally, divide both sides to get x=100.

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A study claims that the mean age of online dating service users is 40 years. Some researchers think this is not accurate and wan
Mademuasel [1]

Answer: H_0:\mu=40

H_0:\neq40

Step-by-step explanation:

  • A null hypothesis is a hypothesis where a researcher generally try to disprove, it says that there is no statistically significant relationship between the two variables .
  • An alternative hypothesis says that there is a statistical significance  between two variables.

Claim 1. : Mean age of online dating service users is 40 years.

i.e. \mu=40, since it has equals sign so we take this as null hypothesis.

Claim 2. : Mean age of online dating service users is not 40 years.

\mu\neq40

⇒ Null Hypothesis : H_0:\mu=40

Alternative hypothesis : H_0:\neq40

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3 years ago
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Ira Lisetskai [31]
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the graph shown below expresses a redical function that can be written in the form f(x)= a(x+k)^1/n + c. what does the graph tel
Oliga [24]

The value of n given the form of the function is (b) positive odd number

<h3>How to interpret the graph?</h3>

The form of the graph is given as:

f(x) = a(x + k)^1/n + c

For the given graph, we have the following features:

a > 0 --- a is positive

k > 0 --- k is positive

c < 0 --- c is negative

If n is an even number, the function would be undefined because the even root of a number is undefined

However, the function is defined if n is an odd number,

Hence, the value of n given the form of the function is a positive odd number

Read more about functions at:

brainly.com/question/4025726

#SPJ1

8 0
2 years ago
Whoever gets this right gets brainlyess answer and it's worth 10 points :)
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60% = 0.6
12 / 0.6 = 20

answer 12 is 60% of 20

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3 years ago
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What composite shape? Where is the shape?

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4 years ago
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