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iogann1982 [59]
3 years ago
6

Kelly is knitting a scarf for her brother. It took her 1/3 hour to knit 1/2 foot of the scarf. How fast Kelly knitting, in feet

per hour
please help me​
Mathematics
1 answer:
Helga [31]3 years ago
3 0

Answer:

9/8

Step-by-step explanation:

She is knitting /3 for 3/8

Therefore, the answer is 9/8

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Simplify (7+5)^2 divided by 4 x 3 + 9
MaRussiya [10]
((7 + 5)^2) / (4 * 3 + 9) =
(12^2) / (12 + 9) =
144 / 21 reduces to 48/7 or 6 6/7

7 0
4 years ago
In how many ways can a quality-control engineer select a sample of3 transistors for testing frm a batch of 100 transistors?
Advocard [28]

Answer:

161700 ways.

Step-by-step explanation:

The order in which the transistors are chosen is not important. This means that we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In this question:

3 transistors from a set of 100. So

C_{100,3} = \frac{100!}{3!(100-3)!} = 161700

So 161700 ways.

6 0
3 years ago
Select the expression that has a value of 4
Harrizon [31]

Answer:

The answer is letter D.

Step-by-step explanation:

320/80

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4 0
3 years ago
DO Tuesday Write 1,003,498 in each form. Word: Expanded: need help really please​
alukav5142 [94]

word form: one million, three thousand, four hundred ninety eight

number form : 1,003,498

expaned form 1000000 + 30000 + 400 + 90 + 8

i would so base form but i cant

8 0
2 years ago
4.5, 3.25, 3.75, 3.25, 4.25, 3.5, 3.75, 4.25, 4.5, 2.5 <br><br> Whats the mean?
Alchen [17]

\frac{4.5 + 3.25 + 3.75 + 3.25 + 4.25 + 3.50 + 3.75 + 4.25 + 4.50 + 2.50}{10}  = 3.75
So; the answer is: 3.75
5 0
4 years ago
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