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alina1380 [7]
4 years ago
6

I Need Assistance.... Please HelpThank You

Mathematics
1 answer:
klasskru [66]4 years ago
4 0

Answer:

7. 37

8. 74

9. 402

10. 74

Step-by-step explanation:

You can simplify the expressions and then do the substitution of the variable value, or you can simply plug in the numbers and do the arithmetic. Either way takes about the same effort.

7. 3(5·4 -1) -4(3·4 -7) = 3·19 -4·5 = 57 -20 = 37

8. 3(5·4 -6) +4(20 -3·4) = 3·14 +4·8 = 74

9. 5(10r +3) -7r = 50r +15 -7r = 43r +15 = 43·9 +15 = 402

10. 4(5r -3) -2(6r -7) = 20r -12 -12r +14 = 8r +2 = 8·9 +2 = 74

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3 years ago
Write an equation of the line passing through point
Serhud [2]

The equation of line passing through the point P(-8,0) that is perpendicular to the line y=-3 is y=0 which can be found out from slope intercept formula.

It is given to us that -

The point is P(-8,0)

The line is represented as y=-3

The point P is perpendicular to the given line.

We have to find out the equation of the line passing through P which is perpendicular to the given line.

We know that the equation of a line is given by -

y = mx + c

where, (x, y) = coordinates of the point

m = slope of the line

c = a constant

Comparing this with the equation of the given line, we have

m=0 and c =-3

This implies that the slope of the perpendicular is also equal to 0.

The slope intercept formula for the perpendicular line can be represented as -

y = mx + c

Using the coordinates of P(-8,0), we have

0 = 0*(-8) +c

=> c = 0.

Thus, the equation of line passing through the point P(-8,0) that is perpendicular to the line y=-3 is y=0.

To learn more about equation of line visit brainly.com/question/21511618

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