1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Viktor [21]
3 years ago
15

What percent of 25 is 21?

Mathematics
2 answers:
Romashka-Z-Leto [24]3 years ago
7 0
It is 84% of 25.

Hopefully this has helped! :)
Misha Larkins [42]3 years ago
4 0
Greetings!

We can solve this problem by creating a simple equation:

Let x represent the percent
21=(\frac{x}{100})(25)

Simplify.
21=(\frac{x}{100})(\frac{25}{1})

21=\frac{25x}{100}

Multiply both sides by 100.
(100)(21)=100(\frac{25x}{100})

2100=25x

Divide both sides by 25.
\frac{2100}{25}=\frac{25x}{25}

84=x

The Answer Is:
\left[\begin{array}{ccc}x=84\end{array}\right]

<u />21 is 84% of 25.

Hope this helps.
-Benjamin
You might be interested in
What is the inverse of function f. f(x)=1/3-1/21x
HACTEHA [7]

Answer:

f^-1 (x) = -21x + 7 is your answer

8 0
3 years ago
A data set with a mean of 34 and a standard deviation of 2.5 is normally distributed
tresset_1 [31]

Answer:

a) z= \frac{34-34}{2.5}= 0

z= \frac{39-34}{2.5}= 2

And we want the probability from 0 to two deviations above the mean and we got 95/2 = 47.5 %

b) P(X

z= \frac{31.5-34}{2.5}= -1

So one deviation below the mean we have: (100-68)/2 = 16%

c) z= \frac{29-34}{2.5}= -2

z= \frac{36.5-34}{2.5}= 1

For this case below 2 deviation from the mean we have 2.5% and above 1 deviation from the mean we got 16% and then the percentage between -2 and 1 deviation above the mean we got: (100-16-2.5)% = 81.5%

Step-by-step explanation:

For this case we have a random variable with the following parameters:

X \sim N(\mu = 34, \sigma=2.5)

From the empirical rule we know that within one deviation from the mean we have 68% of the values, within two deviations we have 95% and within 3 deviations we have 99.7% of the data.

We want to find the following probability:

P(34 < X

We can find the number of deviation from the mean with the z score formula:

z= \frac{X -\mu}{\sigma}

And replacing we got

z= \frac{34-34}{2.5}= 0

z= \frac{39-34}{2.5}= 2

And we want the probability from 0 to two deviations above the mean and we got 95/2 = 47.5 %

For the second case:

P(X

z= \frac{31.5-34}{2.5}= -1

So one deviation below the mean we have: (100-68)/2 = 16%

For the third case:

P(29 < X

And replacing we got:

z= \frac{29-34}{2.5}= -2

z= \frac{36.5-34}{2.5}= 1

For this case below 2 deviation from the mean we have 2.5% and above 1 deviation from the mean we got 16% and then the percentage between -2 and 1 deviation above the mean we got: (100-16-2.5)% = 81.5%

7 0
3 years ago
Renting video games from Store A costs $3.50 per game plus a monthly fee of $7.50. Renting video games from Store B costs $5.00
Burka [1]

Answer:

A

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Answer this question pls!!
Dvinal [7]

Answer:

3.5

Step-by-step explanation:

5 0
3 years ago
the perimeter of an isosceles triangle is 50 cm if one of the two equal side is 13 cm find the third side?​
pychu [463]

Answer:

14 cm

Step-by-step explanation:

There are 2 equal sides of 13 cm, thus the third side is

third side = perimeter - 13 - 13 = 50 - 26 = 14

5 0
4 years ago
Read 2 more answers
Other questions:
  • Help on this one as well
    11·1 answer
  • What answer to 7(v+9)-8(5-7)
    14·2 answers
  • In Evans history class, 10 out of 100 key terms will be randomly selected to appear on the final exam; Evan must then choose 7 o
    7·1 answer
  • Given the event​ "a die lands with a 6 on​ top", which of the following is the complement of this​ event? Choose the correct ans
    8·1 answer
  • Determine if the two functions f and g are inverses of each other algebraically. If not, why not?
    9·1 answer
  • The first ten terms of a sequence whose first term is -10 and whose common difference is -2.
    15·1 answer
  • A parabola can be drawn given a focus of (8, -5) and a directrix of y=-3 . What can be said about the parabola?
    8·1 answer
  • Please answer asap thank you
    13·2 answers
  • Can anyone answer this?
    14·1 answer
  • What value does "h" have in this equation for this to be an infinite solutions equation. 6 (hx + 5) + 4 = -4(8 - 4(8 – 18x) 18x)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!