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jonny [76]
1 year ago
6

Liz saved 15% on the jean's she bought! What lowest terms fraction is equal to 15% ?

Mathematics
1 answer:
aniked [119]1 year ago
5 0

Answer:

\frac{3}{20}

Step-by-step explanation:

Well you can represent percentages as decimals, by dividing the percentage by 100. This gives us the fraction: \frac{15}{100}

We can simplify the fraction, by dividing both the numerator and denominator by 5

\frac{15}{100}=\frac{15\div5}{100\div5}=\frac{3}{20}

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-2x + 6 - 13x + 16
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3 years ago
In a set of 25 aluminum castings, four castings are defective (D), and the remaining twenty-one are good (G). A quality control
lianna [129]

Answer:

The sample space for selecting the group to test contains <u>2,300</u> elementary events.

Step-by-step explanation:

There are a total of <em>N</em> = 25 aluminum castings.

Of these 25 aluminum castings, <em>n</em>₁ = 4 castings are defective (D) and <em>n</em>₂ = 21 are good (G).

It is provided that a quality control inspector randomly selects three of the twenty-five castings without replacement to test.

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

{n\choose k}=\frac{n!}{k!(n-k)!}

Compute the number of samples that are possible as follows:

{25\choose 3}=\frac{25!}{3!\times (25-3)!}

      =\frac{25\times 24\times 23\times 22!}{3!\times 22!}\\\\=\frac{25\times 24\times 23}{3\times 2\times 1}\\\\=2300

The sample space for selecting the group to test contains <u>2,300</u> elementary events.

6 0
3 years ago
Evaluate 16 3/4<br> nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
kramer

Answer:

16.75

Step-by-step explanation:

7 0
2 years ago
Solve the equation
Klio2033 [76]

Answer:

x = 25

Step-by-step explanation:

.20x + .68(120 - x) = .54(120) (Distribute .68 to 120 and -x)

.20x + 81.6 - .68x = .54(120) (multiply .54 and 120)

.20x + 81.6 - .68x = 69.6 ( add .20x and -.68x)

-.48x + 81.6 = 69.6 ( subtract 81.6 on each side)

-.48x = -12 (divide -12 by -.48)

x = 25

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3 years ago
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Answer:

Step-by-step explanation:

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2 years ago
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