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Darina [25.2K]
3 years ago
13

Express the following as percentages. (i) 12 hours in 3 days

Mathematics
2 answers:
Karolina [17]3 years ago
8 0

Answer:

16 2/3 %

Step-by-step explanation:

To put this in a percentage, they need to have the same units.

Let convert days to hours

1 day = 24 hours

Multiply by 3

3 days = 72 hours


The percentage is part over whole

12 hours / 72 hours

We can simplify by dividing top and bottom by 12

1/6

This is a fraction, change this to a decimal

.166666666

Now multiply by 100

16.666666 %

16 2/3 %

Zolol [24]3 years ago
6 0
Hope it helps you buddy

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If you have $ twentyfive of quarters and dimes how much quarters and dimes do u have
mamaluj [8]

You have 400 quarters and 1,000 dimes.

For example you have four quarters in a dollar so you multiply 4*100 = 400.

For example you have ten dimes in a dollar so you multiple 10*100 = 1,000

Hope this helps!!!!!!

Please give me brainliest!!!!!!

6 0
3 years ago
Mrs.Maxwell is buying pencils for her students. She has 3 classes of 28 students each. For Valentine’s Day, she wants to give ea
kirill115 [55]

Answer:

the answer might be 336 sorry if i am not right

Step-by-step explanation:


5 0
3 years ago
Read 2 more answers
A customer orders a round of coffee for her friends. If she orders two 12-ounce cups and one 16-ounce cup, she will owe the coff
astra-53 [7]

Answer:

D.$3.95

Step-by-step explanation:

Let us represent

12-ounce cup = x

16-ounce cup = y

A customer orders a round of coffee for her friends.

If she orders two 12-ounce cups and one 16-ounce cup, she will owe the coffee shop $10.75.

Hence:

2x + y = 10.75.....Equation 1

y = 10.75 - 2x

If she orders one 12-ounce cup and two 16-ounce cups, she will owe the coffee shop $11.30.

Hence:

x + 2y = 11.30.....Equation 2

We substitute 10.75 -2x for y in Equation 2

x + 2(10.75 - 2x) = 11.30

x + 21.50 - 4x = 11.30

Collect like terms

x - 4x = 11.30 - 21.50

-3x = -10.20

x = -10.20/-3

x = $3.40

Solving for y

y = 10.75 - 2x

y = 10.75 - 2($3.40)

y = 10.75 - 6.8

y = $3.95

Therefore , 16-ounce cup is represented by y, the cost for a 16-ounce cup of coffee is $3.95

Option D is correct

3 0
2 years ago
Pls help I really need help how do you reduce 7/2
tatuchka [14]
The answer is 3.5

steps

7 divided by 2

7 go in to 2 3 times which equals 6

then put a decimal then put a 0 then 2 go in to 10 5 times

then the answer is 3.5
5 0
3 years ago
Triangle abc has the following vertices:
Illusion [34]

9514 1404 393

Answer:

  no

Step-by-step explanation:

It is impossible to plot an equilateral triangle on a coordinate grid using integer coordinates. The given triangle may be close, but <em>cannot be an equilateral triangle</em>.

4 0
3 years ago
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