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
harkovskaia [24]
3 years ago
14

How can I use the percent equation???Ex.what number is 40% of 500???and can u solve this one,too.:45 is 25% of what number???THA

NK YOU
Mathematics
2 answers:
timurjin [86]3 years ago
8 0
200 is 40% of 500. 
45 is 25% of 180.

HACTEHA [7]3 years ago
4 0
I've been waiting for someone to ask this question.  It's one of my favorite questions to answer.

percent means out of 100 so 1% = 1/100 and 40%=40/100 or 1/25
so for percent of a number, 'of' means multiply so 40% of 500= 40/100 times 500 or 20000/100 or 200



if you multiply a fraction by its recipricol (the number fliped upside down) the you will get 1 so if you multiply 1/2 by 2/1 then you will get 1

thus
percent is out of 100 so 1%=1/100  25%=25/100
if you represent 45 out of something as 45/x then you multiply it by the reciprocal of the fraction that is supposed to be equal (1/2 =2/4) then you will get 1
so 45/x times reciprocal of 100/25 then you will get 1/1 or 4500/25x
so you divide to find x and get 180
so 45 is 25% of 180


The following is extra
   as stated above 'of' can be taken as multiply so
   45 is 25% of 180 can be rewriten as
   45=25/100 times 180
   but we don't know that 180 is the answer so we replace it with x then            solve for x
You might be interested in
Evaluate 5(x - 1) - 2 when x = 3.<br> O A. -4<br> Ос.<br> O D.O
12345 [234]

Answer:

8

Step-by-step explanation

First you have to plug in 3 for x:

5(3-1)-2

Then using PEMDAS you would simplify that:

5(2)-2

10-2

8

4 0
3 years ago
Factorise this expression as fully as possible 14t^3 x 6t
kupik [55]
14t^3*6t
= (14*6)*(t^3*t)
= (2*7*2*3)*(t*t*t*t)
= 2*2*3*7*t*t*t*t
6 0
3 years ago
What is -12.4 + 9.2 + +1
Sveta_85 [38]
Your answer would be -2.2

8 0
3 years ago
Read 2 more answers
The symmetry of a hyperbola with a center at (h, k) only occurs at y = k.<br> True<br> False
Lyrx [107]
False
Its other axis of symmetry is at x = h.
4 0
3 years ago
Read 2 more answers
What is the missing angle
OLga [1]
The original angle id 90 degrees so subtract the 45 degrees.
Answer: 45 degrees
7 0
3 years ago
Other questions:
  • Population: In a city of 40,000 people, there are 15,000 people under 25 years of age. What percent of the
    11·1 answer
  • Malik collects rare stamps and has a total of 212 stamps. He has 34 more domestic stamps than foreign stamps. Let x represent th
    15·2 answers
  • Which of the following represents the most accurate estimation of 438 + 614?
    9·2 answers
  • Almonds cost $8 per pound and cashews cost $10 per pound. How does the equation change if Tamira has $60 to spend on a mixture o
    13·1 answer
  • Big Nicks moving company unloaded 72 % of the 300 boxes they delivered in 30 minutes. How many boxes did they unload each minute
    12·1 answer
  • Find the slope of the line passing through each pair of points. (9,4) and (5,-3).
    14·1 answer
  • Find the domain of the following piecewise function.
    10·1 answer
  • Choose all that apply: What is needed on any proportional relationship graph?
    8·1 answer
  • Carrie is comparing the growth of plants under natural and artificial light sources.
    12·1 answer
  • Greg buys 2 puzzles from a garage sale. Each puzzle costs $4. Which graph
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!