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
satela [25.4K]
3 years ago
11

The ratio of boys to girls in a class room is 5 to 7. If there are 30 boys then how many girls are there

Mathematics
2 answers:
Brums [2.3K]3 years ago
4 0

Answer:

The ratio of boys to girls to 5:7

Let the number of boys be 5x

Let the number of girls be 7x

5x = 30

x = 6

Now just plug in 6 for the x in 7x

and number of girls 7 x 6 = 42

Black_prince [1.1K]3 years ago
3 0
The answer would be 42 girls
You might be interested in
A particular shade of paint is made by mixing 5 parts red paint with 7 parts blue paint. To make this shade, Shannon mixed 12 qu
Sliva [168]
You need to set up a fraction. You can use red/blue which would be 5/7. Then, create the second ratio which would be 8/12. And there you will find your answer, which this answer also works for your answering wether you get yes or no.
7 0
3 years ago
Help Please! Thanks so much if u do
Sati [7]

Answer:

$65

Step-by-step explanation:

Let's add up the flat rate and the cost of four tires:

flat rate + 4($122.57/tire) = $555.28

We are to solve for "flat rate."  First, multiply out 4($122.57/tire), obtaining a tire cost of $490.28 total.  Subtracting this tire cost from the $555.28 Janette paid the shop, we get "flat rate" = $555.28 - $490.28, or $65.

Thus, the installation charge ("flat rate") must have been $65.

7 0
3 years ago
If i clock out at 11:53 and i have 30 Minutes what time do i get in?
lara [203]

Answer:

you get in at 11:23

Step-by-step explanation:

53-30=30

so 11:23

6 0
2 years ago
Read 2 more answers
Problem Situation: Ben buys a table for $240. He also buys 6 chairs that all cost the same amount. His total cost is $720. What
butalik [34]

Answer:

80 Dollars per chair

Step-by-step explanation:

Step One:

Subtract 720 by (-) 240

this should give you, 480

Step Two:

Divide 480 by 6

Which gives you your answer 80

5 0
2 years ago
7.2 is 15% of what number?​
polet [3.4K]

Answer:

48

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • -10 is less then or more then -2
    11·2 answers
  • Can someone help me with all off theses plsss
    8·2 answers
  • The number of counties in state A and the number of counties in state B are consecutive even integers whose sum is 162. If state
    5·1 answer
  • Myles mows lawns during the summer to earn money. Since he is trying to save money for a car, he tries not to spend very much of
    11·1 answer
  • Ethan went to the farmers market and bought 57 pieces of fruit. He bought 15 pears, 22 apples, and some peaches. Write an equati
    9·1 answer
  • 4. You are paid $7.45/hr at your part-time job. Your deductions are FICA (7.65%), federal tax
    8·1 answer
  • Joe is serving ice cream at a birthday party. He buys 13 1/2 pints of ice cream. He serves 3/4 of a pint to each guest. How many
    7·1 answer
  • Please help me before it closes please
    6·1 answer
  • F (x) = (x - 6)2(x + 2)2
    6·1 answer
  • What is 4.75 + 23.83 by 14
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!