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omeli [17]
3 years ago
8

The straight line ℓ is perpendicular to the line y + 2x = 9 and passes through the point p(4, 3). find the x-intercept of ℓ.

Mathematics
1 answer:
evablogger [386]3 years ago
8 0
The slope of the line l is the opposite reciprocal of y+2x=9. Rearranged the equation to y=9-2x and we get a slope of -2. The opposite reciprocal of -2 is 1/2.

y-y=m(x-x)
y-3=.5(x-4)
y=.5x+1

At the x-intercept, y=0, so
0=.5x+1
-1=.5x
x=-2
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Step-by-step explanation:

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3 0
2 years ago
The cost to repair linda's car is $500, including parts and labor. the cost of parts is $140. if the cost of labor is $40 per ho
Mkey [24]
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andrew11 [14]
So, you need to know that the slope stays where it is, and that the 6 is not part of the final answer, so get rid of it.
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8 0
3 years ago
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liraira [26]
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The correct answer is the first choice:
<span>As the surface area of the balloon increases, the radius of the balloon increases until the maximum surface area is reached.</span>
5 0
3 years ago
Read 2 more answers
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yan [13]

Answer:

option 5

Step-by-step explanation:

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so we write

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finally

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4 0
3 years ago
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