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Amiraneli [1.4K]
3 years ago
14

How is 30 divided into 100 expressed as a percentage?

Mathematics
2 answers:
Ivenika [448]3 years ago
6 0
Perceent means parts out of 100
x%=x/100

30/100=30%
Nata [24]3 years ago
5 0
The correct answer is 30%. Any percentage number out of 100 is the original number. If you're having trouble remembering this, just set up a proportion like you would for any other percentage problem.

30 / 100 = x / 100   In this proportion, we're trying to find the percent out of 100 that 30 divided into 100 is. This is represented by the variable x.
3000 = 100x   Cross-multiply 30 and 100.
30 = x   Divide.

So, x, the percentage that 30 divided into 100 is out of 100, is 30, meaning that 30 is 30% of 100.

Hope this helps!
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2 years ago
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Lily sells loose tea for $0. 71 per gram. If one gram is equivalent to 0. 035273 ounces, how much does it cost to buy 0. 45 poun
Dominik [7]

Unit conversion is a way of converting some common units into another. The cost of buying 0.45 pounds of Lily's tea is $144.93.

<h3>What is Units conversion?</h3>

Unit conversion is a way of converting some common units into another without changing their real value. for, example, 1 centimetre is equal to 10 mm, though the real measurement is still the same the units and numerical values have been changed.

As it is given that one gram is equivalent to 0.035273 ounces, while 1 pound is equal to 16 ounces. Therefore, if we convert 0.45 pounds to grams,

Pounds to Ounces

\rm 1\ pound = 16\ ounces\\\\0.45\ pounds = 0.45 \times 16 = 7.2\ ounces

Grams to Ounces

\rm 1\ gram = 0.035273\ ounces\\\\1 ounce=\dfrac{1}{0.035273} = 28.35\ grams\\\\7.2\ ounces =  7.20 \times 28.35 = 204.12\ grams

Since it is given that the cost of 1 gram of tea is $0.71, therefore, the cost of 204.12 grams of tea can be written as,

\rm Total\ cost= 204.12 \times \$0.71 = \$144.93

Hence, the cost of buying 0.45 pounds of Lily's tea is $144.93.

Learn more about Units conversion:

brainly.com/question/4736731

3 0
2 years ago
How many ways can first second and third place assigned
Papessa [141]

Answer:

i cannot help you get the answer to the question without more information but i can explain how to solve it, what your question is, is called a "permutation"

Step-by-step explanation:

To calculate permutations, use the equation nPr, where n is the total number of choices and r is the amount of items being selected. To solve this equation, use the equation nPr = n! / (n - r)!    , an exclimation point means the factorial, say we need the factorial of 4, we would do this 4x3x2x1 go left to right, and it is not all at once. you multiply 4 times 3 which equals 12, then multiply 12 times 2... so on and so forth

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3 years ago
Is -6/5x=y proportional
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