2 years ago

3/5 of a number is 21 find the number

1 answer:

7 0

Answer:

Step-by-step explanation:

To find the original number multiply by the reciprocal of $\frac{3}{5}$ , that is

number = $\frac{5}{3}$ × 21 = $\frac{105}{3}$ = 35

You might be interested in

zepelin [54]

Sam painted 3
ellie painted 2x3, so she painted 6
6+3=9
together they painted 9 pictures

3 0

2 years ago

vredina [299]

Correct answer is A

Would appreciate brainliest answer :)

4 0

2 years ago

vredina [299]

The answer foe 21 is d

5 0

2 years ago

Nezavi [6.7K]

The answer is 7. So you would do
2(3)2=12
4(3)=12
12-12=0
0+7
7

3 0

3 years ago

Finger [1]

Answer: The director can choose first a lead singer and then a stand-in for the lead singer in 132 ways.

Step-by-step explanation:

Given : The total number of singers auditioning for the school musical.= 12

The director wanted choose first a lead singer and then a stand-in for the lead singer.

We use Permutations here because order of selecting the singers matters.

The number of permutations of selecting r things out of n things = $^nP_r=\dfrac{n!}{(n-r)!}$

Similarly , the number of ways to select 2 singers in an order from 12 singers

$^{12}P_{2}{=\dfrac{12!}{(12-2)!}$

$=\dfrac{12\times11\times10!}{10!}=132$

Hence, the director can choose first a lead singer and then a stand-in for the lead singer in 132 ways.

8 0

2 years ago

3/5 of a number is 21 find the number​