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Sladkaya [172]
4 years ago
10

Can someone help asap please

Mathematics
1 answer:
Zanzabum4 years ago
7 0
Part A
If 2 inches is 25 miles, then you can set up a ratio to find how many inches 60 miles is.
2 inches equaling 25 miles would be 2:25 in a ratio form of inches:miles.
If miles equals 60, then the ratio would be x:60 in inches:miles.
Since both sides must have the same thing done to them, divide 60 by 25 to see how much miles was multiplied by to get to 60, then multiply inches by that to get x.
60 / 25 = 2.4
2 • 2.4 = 4.8
So the answer to part A is 4.8 inches represent 60 miles.

Part B
You can do the same concept for Part B.
1/4 = 0.25
In a ratio of inches:miles, this would be 0.25:x
Since the original ratio is 2:25, you must figure out how many times 1/4 goes into 2.
2 = 2/1 = 4/2 = 8/4
So 1/4 goes into 2, which can be represented by 8/4, 8 times.
This means 2 was divided by 8 to get 0.25.
Now divide 25 by 8 to get x.
25 / 8 = 3.125
So the answer to part B is 3.125 miles are represented by 1/4 inch.
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<h2>x = 3/2</h2>

Step-by-step explanation:

\frac{3}{2} (4x - 2) - 3x = 5 - (x + 2)

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3 0
2 years ago
Suppose the board of directors for Cosmic Coffee wants to know the price range for the lowest 40% of drink sales. Find the z-sco
antoniya [11.8K]

Answer:

The z-score associated with the upper boundary of of this price range is -0.25.

Step-by-step explanation:

It is provided that the board of directors for Cosmic Coffee wants to know the price range for the lowest 40% of drink sales.

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P (X < x) = 0.40

Consider that <em>X</em> follows a Normal distribution.

To compute the probability of a normally distributed random variable we need to first convert the raw score to the <em>z</em>-scores.

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Then,

P (X < x) = 0.40

⇒ P (Z < z) = 0.40

The value of <em>z</em> for this probability is:

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*Use a <em>z</em>-table.

Thus, the z-score associated with the upper boundary of of this price range is -0.25.

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4 years ago
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