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
iren2701 [21]
3 years ago
6

If 55% of the students in a school are boys and number of girls is 900. Find the number of boys.

Mathematics
2 answers:
Reil [10]3 years ago
7 0

Answer: 1100 boys


Step-by-step explanation:


45% students are girls

45% girls in number = 900

1% be = 900x45= 20

55% students are boys

55% boys in number= 55x20= 1100 boys

Masteriza [31]3 years ago
7 0

Answer:

1100

Step-by-step explanation:

The whole school population is represented by 100%, thus

number of girls = 100% - 55 = 45% of population

divide 900 by 45 to find 1% then multiply by 55 to find number of boys

number of boys = \frac{900}{45} × 55 = 1100


You might be interested in
What is x/9 = 9/27 help plz
Irina18 [472]
<h3><u>QUES</u><u>TION</u><u>:</u><u> </u></h3>

what is x/9 = 9/27 help plz

<h3><u>ANSWER</u><u> </u><u>AND</u><u> </u><u>SOLU</u><u>TION</u><u>:</u><u> </u></h3>

  • SOLVING FOR X

<u>Reduce</u><u> </u><u>first</u><u> </u><u>the</u><u> </u><u>fraction</u><u> </u><u>with</u><u> </u><u>9</u>

\large \sf  = \dfrac{x}{9}  =  \dfrac{ \cancel9}{ \cancel{27}}

<u>\large \sf =  \dfrac{x}{9}  =  \dfrac{1}{3}</u>

<u>Now</u><u> </u><u>simpli</u><u>fy</u><u> </u><u>using</u><u> </u><u>cross-multiply</u>

<u>\large \sf  = \dfrac{3x}{9}  = 1</u>

<u>\large \sf = 3x = 1 \times 9</u>

<u>\large \sf = 3x = 9</u>

<u>Lastly</u><u> </u><u>divide</u><u> </u><u>both</u><u> </u><u>sides</u>

<u>\large \sf = 3x \div 3 = 9 \div 3</u>

<u>\large \sf = x = 9  \div 3</u>

<u>\large \sf = x = 3</u>

<h3><u>FINAL</u><u> </u><u>ANSWER</u><u>:</u></h3>

\huge \orange{ \underline{ \boxed{ \sf{x = 3}}}}

HOPE THIS HELP YOU! HAVE A NICE DAY!

~kimtaetae92~

7 0
3 years ago
2,776,714 rounded to the greatest place value is?How many zeros are in the rounded number?The estimated speed of light using a p
Simora [160]

Answer:

3,000,000. 6 Zeros. 898,752,432,640

299,792 kilometers per second is the speed of light normally

Step-by-step explanation:

7 0
4 years ago
If a spring stretches 6 meters when a 7-kilogram weight is attached to it, how much will it stretch when a 42-kilogram weight is
Zinaida [17]

Answer:

Step-by-step explanation:

 This is a simple proportion problems.

7 kilogram weight attache to a spring stretches  = 6 meters

 1 kilogram would stretch                                       =  6/7 m

Therefore 42 kilograms would  stretch                  = (6/7 x 42)meters

                                                                                 =  36 meters.

                                                                         

 

8 0
3 years ago
You start at (5, -3). you move up 8 units. where do you end?
djyliett [7]

Answer:

(5,5)

Step-by-step explanation:

You draw a graph and put an x where (5, -3) is and then from that point, you go up by 8 units

7 0
3 years ago
Simplify the expression to a polynomial in standard form:
lukranit [14]

Answer:

-x^3+7x^2-6x-18

Step-by-step explanation:

Use distributive property: (-x+3)(x^2-4x-6)

What is -x * x^2? Answer: -x^3

What is 3 * x^2? Answer: +3x^2

What is -x * -4x? Answer: +4x^2

What is 3* -4x? Answer: -12x

What is -x * -6? Answer: +6x

What is 3 * -6? Answer: -18

-x^3+3x^2+4x^2-12x+6x-18

Combine like terms, and your answer would be....

-x^3+7x^2-6x-18

Hope this helps :)

Have a great day!

7 0
2 years ago
Other questions:
  • What is the method for this (X+1) squared
    6·2 answers
  • Can someone please explain how to do this?
    7·1 answer
  • Use the distributive property to write the following expression without parentheses.  
    10·2 answers
  • How do u write 37.025 in word form
    15·2 answers
  • Jackie earns $172 per week at her part time job. She is saving this money to buy a used car that cost $2000. At this rate, how m
    10·1 answer
  • Please help. Are they parallel?
    5·1 answer
  • Kara has $38 for the mall with her 5 friends, but she wanted to buy a purse for $18, also she wanted to get bracelets for her fr
    11·1 answer
  • A necklace chain cost $100,00. Beads cost $20,00 each. You spend a total of
    10·2 answers
  • Rewrite `10^{32}\ \/ \ 10^{6}\ `using a single exponent.
    11·1 answer
  • 4.6 is what percent of 23?<br><br> Can someone give me the answer please
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!