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Luba_88 [7]
3 years ago
6

What is the value of x? –2x – x + 3 = –12

Mathematics
1 answer:
Degger [83]3 years ago
5 0

Answer:

x = 5

Step-by-step explanation:

-2 -1(coeffcient of -x) = -3

-3x +3 =-12

subtract 3 (the constant) from both sides

cancelling it on the left and leaving -3x = -15

divide each side by -3 leaving x and 5

x = 5

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The slope perpendicular to the one given is the opposite reciprocal.  So the slope of the "new" line will be -1/5.  Using y = mx + b and filling in 3 for y, -10 for x and the slope, m, of -1/5 will help you solve for b.  Then use that b to write the new equation.  3= -1/5(-10) + b and b = 1.  Your equation, then, is y = -1/5x + 1
3 0
3 years ago
A helicopter flying 1,600 feet above the ground spots an airplaneflying above. If the horizontal distance between the helicopter
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Answer:

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Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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