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
Alja [10]
3 years ago
15

8% of a number is 20

Mathematics
2 answers:
zalisa [80]3 years ago
7 0
The number is 250; 20 / .08 = 250.
Gnoma [55]3 years ago
3 0
To find what the number is, we need to set up proportional fractions.
Currently, we have 8% of a number is 20.
To set up our fractions, put 100% under 8% as a fraction first.

It should look like this: 8/100 (hint: per-cent means per-hundred).

Now, we have 20 out of a number, x. This is because we are claiming that 20 is 8% of a number (if we just reword the question without changing the concept).
It should look like this: 20/x.

Our proportional fractions are:
20/x = 8/100.

To solve for this, we need to cross-multiply the denominator of 8/100 (bottom number, 100) with the numerator of 20/x (top number, 20).

This product equation should look like this:
20 x 100 (when simplified, we get 2000).

Now, we need to cross multiply the numerator of 8/100 (top number, 8) with the denominator of 20/x (bottom number, x).

This product equation should look like this:
8x.

Now that we've cross-multiplied, set our two products as an equation.

8x = 2000.

To solve for x, divide both sides by 8 (remember, what you do to one side of an equation, you must do it to the other).

8x / 8 = x
2000 / 8 = 250.

x = 250

Your final answer is:

8% of 250 is 20.

I hope this helps!
You might be interested in
The distribution of cholesterol levels in teenage boys is approximately normal withnbsp mu equals 170 and sigma equals 30 ​(Sour
ddd [48]

Answer: 0.0336

Step-by-step explanation:

Given : The distribution of cholesterol levels in teenage boys is approximately normal with mean :\mu= 170

Standard deviation : \sigma= 30

The formula for z-score is given by :-

z=\dfrac{x-\mu}{\sigma}

For x=225

z=\dfrac{225-170}{30}=1.83

The p-value =P(z>1.83)=1-P(z

=1-0.966375=0.033625\approx0.0336

The probability that a teenage boy has a cholesterol level greater than 225 =0.0336

4 0
3 years ago
Whitch coordinate pair is the best estimate of the point of intersection in thisgraph 30 point
egoroff_w [7]

Answer:

a

Step-by-step explanation:

4 0
3 years ago
The sum of three consecutive numbers is 537. What is the 3rd number?
maks197457 [2]

For this problem your equation will be x+(x+1)+(x+2)=537

Multiply and Simplify:

x+x+1+x+2=537

3x+3=537

Subtract 3 from both sides:

3x+3-3=537-3

3x=534

Divide both sides by 3:

3x/3=537/3

x=179

179 is the middle number so: 178+179+180=537

180 is the third number.



8 0
3 years ago
Can someone plz do the answer
sashaice [31]
3/4 =9/12 7/9=21/27
3 0
3 years ago
Which statement below is incorrect? The mean is not affected by the existence of an outlier. The median is not affected by the e
prisoha [69]

Answer:

brainly.com/question/3346907

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • Find the difference: 16.25 - 7.92
    5·2 answers
  • Greg's football team played 16 games this season and won 12 of them.
    15·2 answers
  • The owner of a catering company wants to select a random sample of clients to find out about their food preferences.
    13·2 answers
  • A company buys a sweater for $14 and marks it up 90%. It later discounts the sweater 25%.
    12·2 answers
  • Can some one tell me how to Divide this very big Question You will be a life savor if you do!!!!!!
    10·1 answer
  • 3) Chris wants to order DVD's over the internet. Each DVD costs $15.99 and shipping the entire order
    15·2 answers
  • Can someone help me with this please
    14·1 answer
  • Please help me idk this
    13·1 answer
  • X=-4 +6+ (11 +4(-3))
    5·1 answer
  • A rectangular closet is 3 feet long,3 feet wide, and has a volume of 72 cubic feet. What is the hiegth of the rectangular closet
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!