Mathematics: Can somebody me answer question 16 and correct me if i am wrong on question 15 because i am very lost and confused

Can somebody me answer question 16 and correct

Ответ:

valensanta2005

07.08.2020

Mathematics

Ok, So for number 16

Cost/ C= 600

600= 80+ 13n Now subtract 80 from both sides 600-80= 520

520= 13n now just divide both sides by 13 520/13= 40

So the number of people in this group is 40

Now for number 15 Look at the attachment below, I prefer to show my work nicely :-)

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Ответ:

germainenez3288

12.03.2022

Mathematics

Question 15: You are right!
$given \: xd = y(l - d) \\ xd = yl - yd \\ yl = xd + yd \\ l = \frac{x}{y} d + d$
So, option A is the correct answer.

Question 16: Given C = 80 + 13n
If the cost of the tour is $600 i.e. C = 600
$600 = 80 + 13n \\ 13n = 600 - 80 = 520 \\ n = \frac{520}{13} = 40$

Where n is the number of people in the group.
So, there are 40 people in the group.

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Ответ:

omidbromand786

25.01.2023

Mathematics

The number 5 is a prime because it only has two factors. 1 and itself. 1,5

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Can somebody me answer question 16 and correct me if i am wrong on question 15 because i am very lost and confused

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