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Marina CMI [18]
3 years ago
6

The population of Linton is 12 times as great as the population of Ellmore. The combined population of both towns is 9,646 peopl

e. What is the population of Linton?
Mathematics
2 answers:
viktelen [127]3 years ago
8 0
Let's form an equation in the terms of Ellmore. E will be for Ellmore.
E+ 12E=9,646
13E=9,646
Let's divide each side by 13.
9,646÷13
742
So, that means there is a population of 742. Linton is 12 times as much as Ellmore. Let's multiply.
742×12
8,904
There are 8,904 people in Linton.
UNO [17]3 years ago
3 0
Your ratio would be 12:1
Add all the parts to get the whole
13x=9646
find x by dividing by 13 you get 742 now just plug x in 12x=12x742
Linton population is 8904
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Hello I don’t understand question 9 a and b. Please show working out.<br> Thanks
brilliants [131]
A) I would make the positive integer x and then form an equation.

x + 30 = x^2 - 12
x + 42 = x^2
0 = x^2 - x - 42 this can be factorised
(x - 7) ( x + 6) Therefore x = 7 or x = -6

Since the question asks for a positive integer the answer is 7.

B) two positive numbers x and y.

X - y = 3
x^2 + y^2 = 117

Use these simultaneous equations to figure out each number.

Rearrange the first equation

x = y + 3

Then substitute it into the second equation.

(y+3)^2 + y^2 = 117
y^2 + 6y + 9 + y^2 = 117
2y^2 + 6y - 108 = 0
then factorise this.
(2y - 12) (y + 9)

This means that y = 6 or y = -9 but it’s 6 because that’s the only positive number.

Use y to find x

x = y + 3
x = 6 + 3
x = 9

So the answers are x = 9 and y = 6.
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#8 please. GCF of 117, 99, and 126
Advocard [28]
The factors of 117 are: 1, 3, 9, 13, 39, and 117
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The greatest common factors of 117, 99, and 126 are: 1, 3, and 9. And according to your answer choices your answer is C. 9
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