All categories

3 years ago

The ratio of boys to girls in a class is 3:4. There are 35 students in the class. How many students are boys?

Mathematics

1 answer:

cricket20 [7]3 years ago

6 0

Answer:

15 boys and 20 girls

Step-by-step explanation:

1. Since we cant simplify 3:4 we will leave it just like that.

2. 3x+4x=35

3. We add them both to give us 7x=35

4. We divide by 7 to get x by itself which results in 35/7=5.

x=5

5. Now we found x we can create 2 seperate soulutions:

3(5)=

and 4(5)=

Therefore there are 15 boys and 20 girls in the class. This makes sense because 15/20 reduced is 3 over 4.

You might be interested in

What multiplied by itself 3 times gives you -216 please answer asap!!!

AlexFokin [52]

Answer:

-6

Step-by-step explanation:

given

x³ = -216

x = (-216)^⅓

factorize

x = [(-6)×(-6)×(-6)]^⅓

x = -6

4 0

3 years ago

Read 2 more answers

Which equilibrium at one atmosphere pressure is correctly associated with Kelvin temperature at which it occur?a. ice-water equi

Lostsunrise [7]

Answer:

d. steam-water equilibrium at 373 K

Step-by-step explanation:

At one atmospheric pressure , the boiling point of water is 100°C or 273+100 = 373 K in kelvin temperature scale.

so at this temperature vapor pressure of water and steam are in equilibrium .

7 0

3 years ago

Angie read 22 pages during a 30-minute study hall. At this rate, how many pages would she read in 45 minutes

frosja888 [35]

45 minutes is equal to 1.5 times 30:

1.5*30=45

so she will also read 22*1.5 pages, which is 22+11=33

so she will read 33 pages

4 0

3 years ago

Help pls it’s easy I’m just slow lol

IgorLugansk [536]

Answer:

12.65

Step-by-step explanation:

4 0

3 years ago

Select all the statements that are true for the graph shown.

Yuki888 [10]

Answer:

The relationship is proportional.

The relationship is linear.

The equation of the line is y = –3x.

Step-by-step explanation:

The line in the question passes through origin and (4,-12).

The rate of change of the line is

$m=\dfrac{-12-0}{4-0}\\\Rightarrow m=\dfrac{-12}{4}\\\Rightarrow m=-3$

The rate of change of the line or slope of the line is -3

Equation of the line is given by

$(y-0)=-3(x-0)\\\Rightarrow y=-3x$

This means that the relationship is linear.

If we take any value of x then there will be only one value of y this means that the relationship is proportional.

So the following statements are true

The relationship is proportional.

The relationship is linear.

The equation of the line is y = –3x.

3 0

2 years ago

Read 2 more answers