there are 28 students in a classroom. the ratio girls to boys 4 to 3. write and solve a proportion to find how many boys are there in the classroom? include labels​

16 girls 12 boys

16:12

Step-by-step explanation:

multiplied 4 and 3 by 4

4 x 4 = 16

3 x 4 = 12

12 + 16 = 28

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

50- 250 is correct i did that one too

step-by-step explanation: