3 years ago

In a certain classroom, the ratio of boys to girls is 2 to 1. If there are 39 students in the classroom, how many are boys?

Mathematics

1 answer:

weeeeeb [17]3 years ago

8 0

Answer:

26 boys

Step-by-step explanation:

boys : girls = 2 : 1

If girls = x, than boys = 2x.

Altogether girls and boys = (x+2x) = 3x

Altogether girls and boys = 39

3x = 39

x = 39/3 = 13 (girls)

2x = (2*13) = 26 (boys)

You might be interested in

Mathematics-Algebric expressions and identity for class 8

Pani-rosa [81]

Answer:

-12p^4

Step-by-step explanation:

4p^3*(-3p)

-12p^4

5 0

3 years ago

Find the difference and simplify 3/4 - 2/8

Maksim231197 [3]

Answer:

1/2

Step-by-step explanation:

(6/8)-(2/8)=(4/8)

(4/8) = 1/2

3 0

3 years ago

Use the pencil,plot the point (3 1/2, 2 3/4)

kipiarov [429]

Answer:

The diagram of the plotting point $\left(3\frac{1}{2},\:2\frac{3}{4}\right)=\left(3.5,\:2.75\right)$ is attached below.

Step-by-step explanation:

Given the points

$\left(3\frac{1}{2},\:2\frac{3}{4}\right)$

$3\frac{1}{2}=\frac{7}{2}=3.5$

$2\frac{3}{4}=\frac{11}{4}=2.75$

so the point can be visualized as:

$\left(3\frac{1}{2},\:2\frac{3}{4}\right)=\left(3.5,\:2.75\right)$

Now, we can check the point x = 3.5, and determine the corresponding value y = 2.75 and plot the point at the location (x, y) = (3.5, 2.75)

The diagram of the plotting point $\left(3\frac{1}{2},\:2\frac{3}{4}\right)=\left(3.5,\:2.75\right)$ is attached below.

8 0

3 years ago

Miranda buys 6 pounds of nuts. If she puts 1/5 pounds in each bag, how many bags can she make?

Brrunno [24]

30 bags: each pound can make 5 bags (1/5) so 6 x 5 = 30

3 0

3 years ago

What is x?<br> -5 (x - 1) = 40

masha68 [24]

Answer:

x= -7

Step-by-step explanation:

have a good day

6 0

3 years ago

Read 2 more answers