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Nastasia [14]
3 years ago
14

Twice once number added to another number is 18. If the second number is equal to 12 less than 4 times the first number, find th

e first two numbers.
2x+y= 12 ; y= __x - __

I really need help with the second part...
Mathematics
1 answer:
love history [14]3 years ago
6 0

Step-by-step explanation:

2x+y= 12

= 12,18

= 36

so the value of y is 36

value of x is 48

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Answer:

The equation of a line through (5 -3) that is parallel to y = 1/2 x+3 is

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Step-by-step explanation:

Let us assume the slope of the line whose equation we need to find is m 1.

The line parallel to the needed line  is:   y=1/2x+3

Comparing it with the general form: y = m x + C

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Now, as Line 1 is Perpendicular to Line 2.

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⇒ m 1 x ( 1/2)  = -1

⇒ m 1  = - 2

Also, the point son the line 1 is given as: (x,y)  = (5,-3)

Put the value of point and Slope in y = m x + C to find the value of Y- INTERCEPT.

we get: -3 = (-2) (5) +  C

or, C = -3 + 10 = 7

⇒ C = 7

The general line equation is given as:  y = m x + C

Substituting  the values of C and m, we get:

y = - 2 x  + 7

Hence, the equation of a line through 5 -3 that is parallel to y = 1/2 x+3 is

y = - 2 x  + 7

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