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lara31 [8.8K]
3 years ago
13

Divide 18 in two parts so that sum of their reciprocals is 2/5

Mathematics
1 answer:
inn [45]3 years ago
4 0

Answer:

3.6

Step-by-step explanation:

I think that is the answer but im not 100 percent sure

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There are 480 sophomores and 520 juniors in a high school. Find the ratio of juniors to sophomores
kow [346]

Answer:

13:12, 13 to 12, or 13/12

Step-by-step explanation:

520:480

Divide both numbers by GCF (40)

13:12

4 0
3 years ago
Explain how you would find the diameter of a circle if you know the radius.
dimulka [17.4K]
Lets say the radius is 7 so in order to find the diameter you do 7 times 2 = 14
The diameter is 14. to find the diameter you multiply the radius but 2

Hope this helps!
3 0
3 years ago
If y = 7x − 5, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?
LenaWriter [7]

Given equation is y =7x - 5.

Let's plug in the values of x's to get their corresponding values of y's.

Let's plug in x = -5. So,

y = 7( -5) - 5 = -35 - 5 = -40

So, the first order pair is (-5, -40)

Hence, the first choice is not correct.

For x = 2, y = 7 (2) - 5 = 14 - 5 = 9.

Second order pair is (2, 9). So, second choice is also not correct.

Now for x = 0, y = 7(0) - 5 = - 5.

So, the third order pair is (0, -5).

Let's plug in x = -3 to check the third order pair list as we have already got two order pair (0, -5) and (2, 9) from that list.

For x = -3, y = 7(-3) - 5 = - 21 - 5 = -26.

Hence the correct choice is {(0, −5), (2, 9), (−3, −26)}.

4 0
3 years ago
****PLEASE HELP**** Meghan spends 25% more each year for auto insurance than Scott, and together they spend $1237.50 per year. H
s344n2d4d5 [400]

Answer: Meghan spent $687.5 per year.

Step-by-step explanation:

Let x represent the amount of money that Scott spends per year for auto insurance.

Meghan spends 25% more each year for auto insurance than Scott. The value of 25% of the amount that Scott spends per year is

25/100 × x = 0.25 × x = 0.25x

Therefore, the amount that Meghan spends would be

x + 0.25x = 1.25x

If the amount that they spent together is $1237.50 per year, it means that

x + 1.25x = 1237.5

2.25x = 1237.5

x = 1237.5/2.25

x = 550

The amount that Meghan spent per year would be

1.25 × 550 = 687.5

6 0
4 years ago
Nov 18, 10:52:11 PM
RoseWind [281]
The dressmaker can cut 60 12 inch pieces of ribbon
5 0
3 years ago
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