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anygoal [31]
3 years ago
13

Julia ride her horse 12 miles in 45 minutes. What is her average speed in mil/hour?

Mathematics
2 answers:
vfiekz [6]3 years ago
8 0

Answer

16miles/h

Step-by-step explanation:

45minutes is 3/4 of an hour (60 minutes) so multiply 12 and 3/4 (75%) to get 4miles. 4 miles is only 1/4 of her hour so just multiply 4 by 4 to get 16miles.

AnnZ [28]3 years ago
4 0

Answer:

16 miles/hour

Step-by-step explanation:

We need to convert minutes to hours.  1 hours = 60 minutes

45 minutes * 1 hour/60 minutes = 45/60 hours = 3/4 hours = .75 hours

12 miles/45 minutes = 12 miles /.75 hours = 16 miles/hour

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F(x)=0
f(x)=y
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The formula for the perimeter of a rectangle is . What is the length of the unknown side of the rectangle below, if the perimete
Troyanec [42]

Answer:

Step-by-step explanation:

P=2l+2w

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7 0
3 years ago
According to the manufacturer of the candy Skittles, 20% of the candy produced are red. If we take a random sample of 100 bags o
igomit [66]

Answer:

Probability that the proportion in our sample of red candies will be less than 20% is 0.5 .

Step-by-step explanation:

We are given that 20% of the candy produced are red. A random sample of 100 bags of Skittles is taken.

The distribution we can use here is;

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where, p = 0.20 and n = 100

Let \hat p = proportion of red candies in our sample

So, P(\hat p < 0.20) = P(\frac{\hat p - p}{\sqrt{\frac{\hat p (1- \hat p)}{n} } } < \frac{0.20 - 0.20}{\sqrt{\frac{0.2 (1- 0.2)}{100} } } ) = P(Z < 0) = 0.5

Therefore, probability that the proportion in our sample of red candies will be less than 20% is 0.5 .

5 0
3 years ago
What is the extraneous solution?
8_murik_8 [283]
<h3>Answer:</h3>

  x = 1

<h3>Step-by-step explanation:</h3>

<em>The only solution is an extraneous solution</em>, which is to say the equation has no solution.

The rational expression reduces to -1 (for x≠1), which makes the equation ...

  1 = 1/x

The only solution to this is x=1, which is specifically disallowed.

___

If you subtract the right side, the equation becomes ...

  ((-x+1)(x) +2(x)(x -1) -(x -1))/(x -1) = 0

  (-x^2 +x +2x^2 -2x -x +1)/(x -1) = 0 . . . . eliminate parentheses in the numerator

  (x^2 -2x +1)/(x -1) = 0 . . . . . . . . . . . . . . . collect terms

  (x -1)^2/(x -1) = 0 . . . . . . . . . . . . . . . . . . . factor

This is undefined for the only value of x that could possibly be a solution, x=1.

8 0
3 years ago
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