3 years ago

Jonathan's class has 30 boys. Of the students in his class, 60% are girls. How many girls are in Jonathan's class

Mathematics

1 answer:

densk [106]3 years ago

3 0

If 60% are girls, the ratio girls to boys is

... girls : boys = 60% : 40% = 3 : 2

This means the number of girls is 3/2 times the number of boys:

... (3/2)*30 = 45

There are 45 girls in Jonathan's class.

You might be interested in

what is the probability of drawing two yellow marbles if the first one is placed back in the bag before the second draw. give yo

Svetach [21]

Answer:

1:25

Step-by-step explanation:

There are 2 out of 10 yellow marbles.

2/10 simplified is 1/5

Sorry had to edit its multiplied by each other so its actually 1:25

5 0

3 years ago

Im not sure what to do here or how to start for AP calculus

Alborosie

What’s the question ?

6 0

3 years ago

Read 2 more answers

Hilda draws a card from a deck of cards and it is a seven. The probability that it is the 7 of spades is Select one: O a. 1/3 O

Schach [20]

Answer:b

Step-by-step explanation:

Given

Hilda draws a card from a deck of cards and it is seven.

It is certain that card is 7 so there a 4 cards which can be 7

i.e. 7 of hearts,7 of spades,7 of club,7 of diamond

So probability that it is the 7 of spades is

$\frac{1}{4}=0.25$

8 0

4 years ago

4(PX+1)=64 what is the value of x in terms of p and what is the value of x when p is -5 ?

Oksana_A [137]

Answer:

x = -3

Step-by-step explanation:

$4(PX+1)=64\\\\p= -5$

Substitute -5 for p in the given equation and solve

$4(-5(x)+1)=64\\\\\mathrm{Divide\:both\:sides\:by\:}4\\\frac{4\left(-5x+1\right)}{4}=\frac{64}{4}\\\\Simplify\\-5x+1=16\\\\\mathrm{Subtract\:}1\mathrm{\:from\:both\:sides}\\-5x+1-1=16-1\\\\Simplify\\-5x =15\\\\\mathrm{Divide\:both\:sides\:by\:}-5\\\frac{-5x}{-5}=\frac{15}{-5}\\\\Simplify\\x = -3$

4 0

3 years ago

PLEASEEEEE HELPPPPP!!!! D: (picture explains questions)

Molodets [167]

Answer:

DCB ~ RST

JKL ~ JTU

Step-by-step explanation:

7 0

3 years ago