All categories

3 years ago

How do you solve 21÷1/3

Mathematics

1 answer:

nordsb [41]3 years ago

8 0

Answer:

Step-by-step explanation:

<u>When dividing by a fraction, it is the same a multiplying that fraction but the reciprocal of it.</u>

21 / 1/3 is same as 21 * 3/1

Answer: 63

You might be interested in

Evaluate expression an the property used of (8-8)+21

Setler [38]

The answer is 21 because you do PEMDAS first. (8-8) is 0. And 0+21 is 21

6 0

3 years ago

A family drives 425 miles the first day, 187 miles the second day and 243 miles the third day of their vacation. The odometer re

Andreas93 [3]

The reader should say 48,481

7 0

3 years ago

Universal Pet house sells vinyl doghouse and treated lumber doghouses. It takes the company 5 hours to build a vinyl doghouses a

LuckyWell [14K]

Answer:

The system of equations is :

Equation 1- $5x+2y=50$

Equation 2- $x+2y=30$

Number of vinyl doghouse = 5

Number of treated lumber doghouse =12.5

Step-by-step explanation:

Let x be the number of vinyl doghouses

y be the number of treated lumber doghouses

→If it takes the company 5 hours to build a vinyl doghouses and 2 hours to build a treated lumber doghouse. The company dedicates 50 hours every week towards assembling and painting doghouses.

Equation 1- $5x+2y=50$

→It takes an additional hour to paint each vinyl doghouse and an additional 2 hours to assemble each treated lumber doghouse. The company dedicates 30 hours every week towards assembling and paining dog houses.

Equation 2- $x+2y=30$

→When we solve these equation we get the number of vinyl doghouse and treated lumber doghouse.

Subtract equation 2 from equation 1

$5x+2y-x-2y=50-30$

$4x=20$

$x=\frac{20}{4}$

$x=5$

Put value of x in equation 2

$x+2y=30$

$5+2y=30$

$2y=25$

$y=\frac{25}{2}$

$y=12.5$

Therefore, number of vinyl doghouse = 5, number of treated lumber doghouse =12.5

4 0

3 years ago

Read 2 more answers

Trudy bought a $20 prepaid long distance phone card. for every minute that she talks, $0.25 is deducted from her card. The funct

Aleksandr-060686 [28]

Answer:

Step-by-step explanation:

Given the function f(m)=20-0.25m to represent the amount of money f(m) she has left after talking m minutes, the zero of the equation can be gotten by setting f(m) to 0

f(m)=20-0.25m

0 =20-0.25m

-20 = -0.25m

m = -20/-0.25

m = 80

Hence Trudy will have talked for 80minutes if she has no money left

3 0

3 years ago

James did not get the PlayStation that he wanted for his birthday, but instead, he got $80. He decided that he will save the $80

Vika [28.1K]

W=14 that’s because 360-80=280 then you have to divide that by 20. And you get 14 weeks.

6 0

3 years ago