22crybur 22crybur

02-12-2016
Mathematics

contestada

The ratio of boys to girls at a movie is 4 font size decreased by 4 : 7. If there are 21 girls, how many boys are at the movie?

Respuesta :

wizard123 wizard123

02-12-2016

Set up a proportion
[tex]\frac{boys}{girls} = \frac{4}{7} = \frac{B}{21}[/tex]

Solve for B by multiplying by 21 on both sides
[tex]B = 21*\frac{4}{7} = 12[/tex]

Answer Link

Otras preguntas

What feature of Japan made it difficult to unify and govern? Many different religions Diverse and numerous immigrants Lacking communication with other nations C

14 1/4 - 10 3/7 Reduce to lowest form.... step by step to see if my answer your answer

who was the king that got executed in the 17th century

Which animal could a bulldog mate with to produce offspring? A. sheepdog B. beaver C. raccoon D. tabby cat

examples of three different types of computer storage

If 150g of sugar is used for 5 cakes How much is used for 7 cakes?:)

Jill purchased fruit juice boxes for a party . She purchased 1 case of 44 boxes and several packs containing 4 boxes each.Let p represent the number of 4-box pa

What is the capital of Maine

find correct two decimal places, the radius of the circle with the given circumference: 35cm

A man in a photograph is 1.5 inches in height. If the man is 6 ft. tall, what is the scale.