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aliya0001 [1]
3 years ago
9

A box contains 720 marbles. The result of 20 marbles pulled at random from the box is given below. • 5 red marbles • 6 blue marb

les • 3 green marbles • 4 black marbles • 2 yellow marbles Based on this information, how many yellow marbles could be expected in the box? A) 64 B) 72 C) 88 D) 100
Mathematics
1 answer:
mrs_skeptik [129]3 years ago
4 0

20 is the size of a random sample of 720 marbles.

Notice that 720=20*36

If there are 2 yellow marbles in the sample of 20 marbles, then we can expect:

2*36=72 yellow marbles in the box of 720 marbles

So, B) 72 is the correct answer

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Answer:

72,220 inches per  minute

Step-by-step explanation:

A car's wheels spins at 1000 revolutions per minute. The diameter of the wheels is 23 inches.

1 revolution = 2\pi radians

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Speed V= \frac{r*theta}{t}

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Speed V= \frac{23}{2}*\frac{2000\pi}{1}

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3 0
3 years ago
Read 2 more answers
(13) The temperature on a cold winter day is 2 degrees below zero. In the night, the temperature drops an additional 14 degrees.
EastWind [94]
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For the second question, just know that whenever a negative number is BY ITSELF in parentheses, that means it is used like a positive number in the equation. So (-12) automatically becomes 12. Now, since the problem is asking for a SUM, (the answer to an ADDITION problem; when you add instead of subtract), you would turn that minus symbol to a plus symbol, and add normally to get your final answer; 30 + 12 = 42. To check if this is correct, just type in <span>30 – (–12) to a calculator and you'll get the same answer! :D
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5 0
3 years ago
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Answer:

10 km/ hour = 6.25 miles/ hour

Step-by-step explanation:

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4 years ago
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user100 [1]

Answer:

B

Step-by-step explanation:

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3 years ago
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Answer:

x = 2

Step-by-step explanation:

10/5 = 2 so it would look like this

2 4 6 8 10

1  2 3 4 5

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3 years ago
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