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natka813 [3]
3 years ago
7

What number is 4 time another. The sum of the reciprocals is 15/4. find the numbers

Mathematics
1 answer:
antoniya [11.8K]3 years ago
8 0

Answer:

3/4 , 3

Step-by-step explanation:

Let one number = x

Other = 4x

Sum:

x + 4x = 15/4

5x = 15/4

x = 3/4

Thus the numbers are 3/4 , 3

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The number of pages read varies directly as the number of minutes. If you can read 20 pages in 45 minutes,have many pages can yo
Softa [21]
20/45 = x/18
(cross multiply and sole)
360=45x
x=8
8 pages
6 0
3 years ago
RoBoCo Costume Inc plans to launch a major campaign to sell Robby the Robot costumes for Halloween. The price-demand equation fo
Neko [114]

Answer:

x = 20,000

p = $40

If the price increase by $1, the demand will decrease by 1000

Step-by-step explanation:

Given:

x = 160 - p

x = number of Robby costumes demanded in thousands

p = price in dollars.

a. How many costumes can be sold at a price of $140?

x = 160 - p

x = 160 - 140

= 20

x = 20,000

20 thousand costumes can be sold at a price of $140

b. What price should be charged if the demand is 120,000 Robby costumes?

x is in thousand

p is in dollars

x = 160 - p

x + p = 160

120 + p = 160

p = 160-120

= 40

p = $40

c. If the price increases by $1.00, by how much does the demand decrease?

x = 160 - p

= 160 - 141

= 19

x= 19,000

If the price increase by $1, the demand will decrease by 1000

5 0
3 years ago
Unit sales for new product ABC have varied in the first seven months of this year as follows:
Kazeer [188]

Answer:

Coefficient of skewness = 0.5785

Population standard deviation = 88.154

Step-by-step explanation:

Given the data:

Month Jan Feb Mar Apr May Jun Jul

Unit Sales 314 285 158 482 284 310 281

Reordered data : 158, 281, 284, 285, 310, 314, 482

The population mean of the data :

Mean, μ = Σx / n = 2114 / 7 = 302

The median :

1/2(n+1)th term

n = 7

1/2(8)th term

Median = 4th term = 285

The population standard deviation, s :

s = √(Σ(x - μ)²/n)

s = √[(158-302)^2 + (281-302)^2 + (284-302)^2 + (285-302)^2 + (310-302)^2 + (314-302)^2 + (482-302)^2] / 7

s= √(54398 / 7)

s = √7771.1428

s = 88.154

The Pearson Coefficient of skewness :

[3(μ - median)] / s

3(302 - 285) / 88.154

3(17) / 88.154

51 / 88.154

= 0.5785

6 0
3 years ago
SOMEONE HELP ME PLEASEEE
Makovka662 [10]

Answer:

I would say A

Step-by-step explanation:

4 0
2 years ago
Which function has real zeros at x = –8 and x = 5?
Tcecarenko [31]

Answer:

option B is the answer . thank me later , you guys are lame

3 0
3 years ago
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