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
Travka [436]
2 years ago
13

1) What is 20% of 20? 2) what is 15 is what percent of 30? 3) 50 is 50% of what?

Mathematics
2 answers:
N76 [4]2 years ago
7 0

Hi there!

The word "of" is the same thing as a multiplication sign.

1)

20% = 0.2

0.2 × 20 = 4


2)

? × 30 = 15

divide each side of the equation by 30

? = 0.5

0.5 = 50%


3)

50% = 0.5

0.5 × ? = 50

divide each side of the equation by 0.5

? = 100


There you go! I really hope this helped, if there's anything just let me know! :)

zysi [14]2 years ago
3 0
<h3>QUESTION 1</h3>

What is 20% of 20?

To find the percent of a number, you have to change the percent into a decimal or a fraction and multiply by the number.

DECIMAL:

To change a percent into a decimal, remove the percent sign and move the decimal point 2 places to the left.

20 \% \rightarrow 0.2

Now that you have your decimal, multiply by 20:

0.2 \times 20 = 4

ANSWER  = 4

FRACTION:

To change a percent into a fraction, make the percent number as the numerator(top number) and 100 as the denominator(bottom number) since fractions are out of 100.

20 \% \rightarrow \frac{20}{100}

Now that you have your fraction, multiply by 20:

\frac{20}{100} \times 20 = \frac{400}{100} = 4

ANSWER = 4

<h3>QUESTION 2</h3>

15 is what percent of 30?

For questions like these, you have to divide. In this question, you have to divide 15 by 30 and change that into a percent.

First divide:

15 \div 30 = 0.5

Now you need to change the decimal into a fraction.

To change a decimal into a percent, you have to add a percent sign and move the decimal point 2 places to the right.

0.5 \rightarrow 50 \%

ANSWER = 50%

<h3>QUESTION 3</h3>

50 is 50% of what?

For this question, you can make an equation.

50 = 50 \% \times x

To make it easier, change 50% to a decimal:

50 \% = 0.5

Here is your new equation:

0.5 \times x = 50

x is your answer. To find your answer, you have to divide both sides by 0.5 to leave x alone. Divide:

0.5 \times x \div 0.5 = 50 \div 0.5 \\ x = 50 \div 0.5 \\ x = 100

ANSWER = 100

<em>If you have any questions, feel free to ask in the comments! :)</em>

You might be interested in
Write an expression that represents the sum of a number x and 11​
Helen [10]

Answer:

x+11

Step-by-step explanation:

here is the equation

3 0
2 years ago
A garden is rectangular with an area of 6/7 square miles. If the length of the garden is 3/5 miles, what is its width?
Dafna11 [192]

Answer:

Step-by-step explanation:

Area= length x width

area=6/7, length=3/5, width=?

6/7=3/5 x width

6/7 divided by 3/5= 6/7 x 5/3 (you have to multiply by the recipricol, or flip the fraction.)

6/7 x 5/3=30/21= 1 3/7=width

7 0
3 years ago
Adriano loves anime and collects toys from his favorite series. each month he gains 4 toys. if adriano has 3 toys when he starts
skad [1K]
The equation for this would be 4x+3=y where x is months and y is your amount of toys after x months.
plug in 4 for x -> 4(4)+3=y
solve -> 16+3=y
y=19
8 0
2 years ago
Read 2 more answers
raphael went to the store and bought 2.88 pounds of chicken for $7.00 what was the cost per pound of chicken round to the neares
svetlana [45]

Answer:

2.43

Step-by-step explanation:7.00 / 2.88 rounded to the nearest tenth (cents) is 2.43

6 0
3 years ago
Find the Difference.<br> 27,202 -3,489-
Valentin [98]

Answer:

23,713

Step-by-step explanation:

27,202 - 3489 = 23,713.

I'm not sure if you meant to put a minus sign at the end, or you just meant to put an equal sign?

Line up the numbers with the largest number on top. Then subtract from the number above it by the number below it. Whenever you need to, you can borrow from the next place value. Ask any questions you need to.

7 0
3 years ago
Read 2 more answers
Other questions:
  • A rectangular prism has a length of 1 1/2 feet, a width of 2 1/2 feet, and a height of 8 feet. what is the volume of the prism i
    8·1 answer
  • 2(x-3)=12 <br><br> Can someone please solve this step by step
    11·2 answers
  • Leslie has to measure 8 cups of gaterade and she has 2 1/2 how much more does she need
    5·2 answers
  • 80 POINTS<br><br> Verify the Identity.<br> cot(x-π/2) = -tanx
    5·2 answers
  • In the document can someone please help me understand it
    15·1 answer
  • A large adult elephant weighs 24,000 pounds. A baby elephant, on the other hand, weighs only 260 pounds. How much more does the
    6·2 answers
  • Which of the points shown below are on the line given by the equation y= X?
    5·1 answer
  • The ordered pairs (12, 36), (15, v) represent a proportional relationship. Find the value of<br> V
    6·1 answer
  • Which equation is y +5 = 1/3 (x - 9) in slope-intercept form
    14·1 answer
  • Example<br> Solve the quadratic equation<br> x² - 6x +13=0
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!