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2 years ago

4 to 7 is what 2:5 is what 3 to 15 is what 1:3 is what

Mathematics

1 answer:

bagirrra123 [75]2 years ago

3 0

Answer:

I dont understand the question. But if ur asking to divided each of them,

4:7 - 7/4 = 1.75

2:5 - 5/2 = 2.5

3:15 - 15/3 = 5

1:3 - 3/1 = 3

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If the mean, median, and mode are all the same for 4, 9, 7, 8, and x, what is the value of x?

seropon [69]

<h3>Answer: x = 7</h3>

===========================================================

Explanation:

Since we have an odd number of values, this tells us that the median is part of the data set. It's the middle most item after we sort the values.

Recall that the mode is the most frequent item. Since the mode and median are the same, this must mean x can only be equal to one of the following

4, 9, 7 or 8

We can only pick one of those values.

----------------------

If x = 4, then the set {4,9,7,8,x} updates to {4,9,7,8,4} which sorts to {4,4,7,8,9}

The middle most item is in slot 3, which would be 7. So the median is 7.

The median 7 does not match with the mode 4.

So we cross x = 4 off the list.

-----------------------

If x = 7, then we have {4,7,7,8,9}

The mode is 7 and the median is 7. So far, so good.

Now let's compute the mean. Add up the values and divide by 5 because there are 5 items.

(4+7+7+8+9)/5 = 35/5 = 7

We've shown that the set {4,7,7,8,9} has mean 7.

Overall, that set has the same mean, median and mode. So the answer is confirmed.

I'll let you check the cases when x = 8 and x = 9.

8 0

3 years ago

4. Joe received an hourly wage of $8.15. His boss gave him a 7% raise. How much does Joe make per hour now?

Olenka [21]

Answer:

$ 8.72

Step-by-step explanation:

How much does Joe make per hour now?

$8.15 + 7%·$8.15 =

= $8.15 + 7×8.15/100

= $8.15 + $57.05/100

= $8.15 + $0.57

= $ 8.72

5 0

3 years ago

Read 2 more answers

Which change(in percent) is bigger :

Zinaida [17]

Answer:

Losing weight from 50lb to 40lb is a larger percent change.

That would be the equivalent of going from 100lb to 80lbs

Step-by-step explanation:

4 0

3 years ago

How do i solve 3x² - 8x + 2 = 0 using quadratic formula?

DENIUS [597]

$3x^2 - 8x + 2 = 0\\ \\a=3 , \ \ b=-8 , \ \ c=2 \\ \\x_{1}=\frac{-b-\sqrt{b^2-4ac}}{2a} =\frac{8-\sqrt{ (-8)^2-4 \cdot 3\cdot 2}}{2 \cdot 3} =\frac{8-\sqrt{ 64-24 }}{6} =\\ \\ =\frac{8-\sqrt{40 }}{6} = \frac{ 8-\sqrt{4\cdot 10 } }{6} = \frac{ 8-2\sqrt{ 10 }}{6} = \frac{2 (4-\sqrt{ 10 })}{6} = \frac{ 4-\sqrt{ 10 } }{3}$

$x_{2}=\frac{-b+\sqrt{b^2-4ac}}{2a} =\frac{8+\sqrt{ (-8)^2-4 \cdot 3\cdot 2}}{2 \cdot 3} = \frac{ 4+\sqrt{ 10 } }{3}$

7 0

2 years ago

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A dog breeder plans to mix two types of food to make a mix of low cost

lys-0071 [83]

Answer:

3.75 bags of ChowChow
0.75 bags of Kibble

Step-by-step explanation:

The constraints on protein, minerals, and vitamins give rise to the inequalities ...

40c +30k ≥ 150 . . . . . . required protein

20c +20k ≥ 90 . . . . . . required minerals

10c +30k ≥ 60 . . . . . . . required vitamins

And we want to minimize 10c +12k.

The graph shows the vertices of the feasible region in (c, k) coordinates. The one that minimizes cost is (c, k) = (3.75, 0.75).

To minimize cost, the daily feed should be ...

3.75 bags of ChowChow
0.75 bags of Kibble

Daily cost will be $46.50.

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3 years ago