MATHEMATICS HIGH SCHOOL

the market price of an articles is rs 4000. if the price of the aricle including13 % vat is rs 3616 . find the dis.. percent given to it ​

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Answer 1
Answer:

Step-by-step explanation:

Answer:seeinthepicture.

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Kala purchased a prepaid phone card for S15. Long distance calls cost 24 cents a minute using this card. Kala used her card only once to make a longdistance call. If the remaining credit on her card is $5.64, how many minutes did her call last?

Answers

15 - x = 5.64

15 - 5.64 = x

9.36 = x

//

9.36 / 0.24 = 39

her call lasted 39minutes.

In an area of the Midwest, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushels per acre). The data for a 9 year period is given in the table. The equation of the line of best fit for this data is y = 47.3 + 0.78x. How many bushels of wheat per acre can be predicted if it is expected that there will be 17 inches of rain?

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Answer:

Step-by-step explanation:

Given: Data is in terms of rainfall (in inches) and Yield of wheat (bushels

           per acre)

           Equation of Best fit line for 9 year of data is Y = 47.3 + 0.78X

To find: Bushels of wheat per acre when 17 inches of rain expected.

Given problem is of Regression analysis as we are given with best fit line.

From the Equation of  Best fir line we can conclude that it is equation of line Y on X because when put value of X we get value of Y.

From Given Data, let say X be Rainfall length and Y be Yield of wheat.

So, to find the  Bushels of wheat (yield) when 17 inches of rainfall is expected.

we put value X = 17 in given equation.

⇒ Y = 47.3 + 0.78 × ( 17 )

⇒ Y = 47.3 + 13.26

⇒ Y = 60.56

Therefore, 60.56 bushels of wheat per acre can be predicted if 17 inches of rain is expected.
Assuming x is the rainfall, you simply plug in 17 for x and solve for y.  

47.3 + .78(17)
= 47.3 + 13.26
= 60.56

Help asap

A -1/3
B 3
C 1/3
D -3

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