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3 years ago

Find the value of two numbers if their sum is 18 and their difference is 2

2 answers:

7 0

Let X be the first and second number.
X+X = 18
+ X-X = 2
2X = 20 (divide both sides by 2
X = 10
Substitute the values to get the second number
10+X = 18
X = 18 -10
X = 8
Therefore, the numbers are 10 and 8

Sedaia [141]3 years ago

3 0

8 and 10 are the two values

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Answer:

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Step-by-step explanation:

Exercise 3

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$\implies y=\dfrac35x+\dfrac25$

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a) If L2 is parallel to L1, it has the same slope (gradient) ⇒ $m = -2$

If L2 passes through point (3, 1):

$y-y_1=m(x-x_1)$

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If L3 passes through point (-5, 2):

$y-y_1=m(x-x_1)$

$\implies y-2=\dfrac12(x+5)$

$\implies y=\dfrac12x+\dfrac92$

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