3 years ago

Can some one please help me? The ratio of boys to girls in gym class is 6 to 5. There were 30 boys in gym class. How

Mathematics

1 answer:

Mandarinka [93]3 years ago

6 0

Number of girls in gym class is 25

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

The ratio of boys to girls in gym class= 6:5

Number of boys in gym class= 30

Number of girls in gym class,

A/B= 6/5

x/y= 30/a

A/B= x/y

6/5= 30/a

a= 30 × 5 / 6

a= 25

Number of girls in gym class is 25

You might be interested in

Witch one I need help

Ira Lisetskai [31]

Answer:

I believe the correct answer is A.

5 0

4 years ago

Use Gauss's approach to find the following sums (do not use formulas). 1+3+5+7+...999

muminat

$S=1+3+5+\cdots+995+997+999$
$S=999+997+995+\cdots+5+3+1$
$\implies 2S=(1+999)+(3+997)+(5+995)+\cdots+(995+5)+(997+3)+(999+1)$

$2S=\underbrace{1000+1000+\cdots+1000+1000}_{500\text{ times}}$

(We are adding 500 instances of 1000 because that's how many odd numbers there are between 1 and 1000, inclusive.)

$2S=500\times1000=500000$
$\implies S=250000$

4 0

4 years ago

How many atoms of each elementare in the chemical formula NH.NOS?

dalvyx [7]

Answer:

There are 2 nitrogen, 4 hydrogen, and 3 oxygen atoms in the chemical formula for ammonium nitrate.

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

Express 5/21 as a decimal...please help !

Rudik [331]