All categories

2 years ago

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

Mathematics

1 answer:

GaryK [48]2 years ago

3 0

Answer:

12 boys

Step-by-step explanation:

7 x 3 = 21

4 x 3 = 12

12 boys

You might be interested in

Deirdre is factoring the polynomial x2 + 2x – 24. Which combination can she use to replace the middle term, 2x?

mafiozo [28]

to replace 2x we need +6x-4x

3 0

2 years ago

Read 2 more answers

HI IM YELLOW MNBVGHFDRETY^%UIKJHBVCFDRTY

laiz [17]

Answer:

Hello yellow I'm angalena hoflin

4 0

2 years ago

Read 2 more answers

For which rational expression is 8 an excluded value ? check all that apply

denis23 [38]

<u>Answer:</u>

The correct answer options are C. $\frac{x^2+5}{x-8}$ and D. $\frac{x^2-x-56}{x^2-64}$ .

<u>Step-by-step explanation:</u>

The values which make the denominator equal to zero are called the excluded values.

Here, we can substitute 8 for x and check if it makes the denominator 0.

$\frac{x-8}{x+8} = \frac{8-8}{8+8} =\frac{0}{16} =0$

$\frac{x-2}{x^2-4} = \frac{8-2}{8^2-4} =\frac{6}{60} =\frac{1}{10}$

$\frac{x^2+5}{x-8} = \frac{8^2+5}{8-8} =\frac{69}{0}$

$\frac{x^2-x-56}{x^2-64} = \frac{8^2-8-56}{8^2-64} = \frac{0}{0} =0$

$\frac{8x^2-2}{x^2-16} = \frac{8(8)^2-2}{8^2-16} =\frac{510}{48}$

7 0

2 years ago

A woman walks due east on the deck of a ship at 4 mi/h. the ship is moving south at a speed of 24 mi/h. find the speed of the wo

grandymaker [24]

we are given

A woman walks due east on the deck of a ship at 4 mi/h.

the ship is moving south at a speed of 24 mi/h

so, firstly, we will draw diagram

so, we have

$OW=4$

$OS=24$

now, we can use Pythagoras theorem

$SW^2=OS^2+OW^2$

now, we can plug values

and we get

$SW^2=24^2+4^2$

$SW=24.33$

so,

the speed of the woman relative to the surface of the water is 24.33 mi/h .......Answer

6 0

3 years ago

Ms. Tao flies roundtrip twice yearly between Jacksonville and Las Angeles on business. The distance between the two cities is 2,

JulsSmile [24]

The estimated distance is 1,000 for each trip....the exact distance is 1,075.

4 0

2 years ago

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

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