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
igor_vitrenko [27]
3 years ago
7

55% of the students at a school are girls. If there are 231 girls at the

Mathematics
1 answer:
Simora [160]3 years ago
7 0

Answer:

420

Step-by-step explanation:

The number of students in the school is unknown, so we'll call it x.

55% of the number of students are girls.

There are 321 girls.

55% of x = 231

0.55x = 231

x = 231/0.55

x = 420

Answer: 420

You might be interested in
MARKING BRAINLIST IF THESE TWO ARE ANSWERED‼️‼️‼️
AleksAgata [21]

Anime club: 500 - 30y

Computer club: 150 + 20x

*you could use any letter(variable) you like*

8 0
3 years ago
Please help with (4.)
tia_tia [17]
This question is pretty confusing in the way that i'm not entirely sure what it wants the answer to be, but i'll do my best.

i used the simple interest formula to come up with the equations, and the formula is I = PRT, (I) being interest, (P) being the amount, (R) being the rate of interest, (T) being the time, in months

b = the balance on the customer's account
c = service charge
t = number of months

if b > 1000, then c = b*.008t
if b </= to 1000, then c = b*.012t
if b < 50, then c = t
if b = 0, then c = 0

it looks really confusing but i'm hoping it's lining up with what you're learning and not completely ?????

i created the restrictions with the inequalities based on the given information of what happens when a balance exceeds 1000, is less than 1000, is less than 50, and is 0.

i used the remainder of the given information in the problem to get the equations -- the interest rate for b > 1000 is 0.8%, which is .008, b </= 1000 is .012, and so on. i hope this wasn't too terribly confusing, and let me know if you have any questions about how i came up with the equations!!
8 0
3 years ago
14. POLITICS Mi-Ling wants to mail at least 850 fliers encouraging voters to vote for the
mrs_skeptik [129]

f = amount of fliers expected to be mailed in 1 day.

a)

so, she has 5 days to mail those fliers, so

day 1........... 1f mailed out

day 2........... 2f mailed out

day 3........... 3f mailed out

day 4........... 4f mailed out

day 5........... 5f mailed out

so she'll be mailing out a total of 5f fliers, we know whatever "f" is, that total must be at least 850, now, it could be more, no less, could also be 850 exactly, but could also be more, 5f ⩾ 850.

b)

\bf 5f \geqslant 850\implies f\geqslant \cfrac{850}{5}\implies f\geqslant 170

8 0
3 years ago
Please help me please help i will give up vote and 5 star please and follow
Afina-wow [57]

Answer:

C. y = 4x, table B, graph A

Step-by-step explanation:

Charges = $4 per hour (this is the slope, m,)

m = 4

The equation can be represented in the form of y = mx

Where,

m = slope = 4

Substitute m = 4 into y = mx

Thus:

y = 4x

✔️The table that represents the equation y = 4x showing that for 1 hour, the charges is $4 is table B (x = 1, y = 4).

Table B represents the parking cost.

✔️The equation with a slope of 4 is the equation that represents the parking cost. Thus, in graph A, when x = 1 (hour), y = 4 (cost).

Therefore, graph A is the answer.

3 0
3 years ago
The triangular prism has a volume of 27 cubic units.
Mashcka [7]
For this case we have the following relationship between the volumes:
 V2 = k ^ 3 * V1&#10;
 Where,
 V2: Volume of the triangular prism after applying the scale factor on each side
 V1: Original volume of the triangular prism
 k: scale factor
 Substituting values we have:
 V2 = (\frac{1}{3})^3(27)
 Rewriting:
 V2=\frac{1}{27}(27)
 V2=1
 Answer:
 
the volume of the prism if each side is dilated by a factor of 1/3 will be
 
V = 1 cubic unit
7 0
4 years ago
Other questions:
  • WILL GIVE BRAINLIEST
    12·1 answer
  • F(x)=7x+2 <br> H(x)=2x/7 <br> f(x)•h(x)
    7·1 answer
  • A punch recipe that serves 24 people calls for 4 L of lemon lime soda 2 pints of sherbet and 6 cups of ice how much of each ingr
    5·1 answer
  • You make candles by adding 2 fluid ounces of scented oil for every 22 fluid ounces of wax. Your friend makes candles by adding 3
    13·1 answer
  • Help please this is hard
    10·1 answer
  • True or false dilations always increase the length of time segments ​
    11·1 answer
  • James bought a cabinet for $438.00. The finance charge was $49 and she paid for it over 18 months.
    10·1 answer
  • Fun fact :
    7·1 answer
  • Find the solution(s).<br> 글 1x2 - 2x + 3 = 0
    15·1 answer
  • a. In the general education course requirement at a college, a student needs to choose one each from social sciences, humanities
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!