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ahrayia [7]
3 years ago
9

What is the slope of a line that is perpendicular to the line with equation 12x+3y=9?

Mathematics
1 answer:
Anna71 [15]3 years ago
4 0

Answer:

The slope would be 1/4.

Step-by-step explanation:

To find the perpendicular slope first you have to set this equation to y

to do this you use the subtraction prop of equality and you will get 12x-9= -3y

then you divide by -3 on both sides to get y by itself

you will get -4x+3=y

now that you know the slope is -4, you must find the negative reciprocal slope of this which means you have to flip the numerator and denominator and make the sign its opposite.

The perpendicular slope would then be 1/4.

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Illusion [34]

A posted speed limit of 55 mph means that: You may drive 55 mph only under favorable conditions.

<h3>What is the speed limit?</h3>

Speed limits on road traffic, as used basically to set the legal maximum speed at which vehicles are permitted to utilize on a given stretch of road.

Now generally, speed limits are normally indicated on traffic signs reflecting the maximum allowable speed in kilometers per hour (km/h) or eevn miles per hour (mph). They are primarily set by the legislative bodies of national or provincial governments and then enforced by law enforcement agencies. This suggests that speed limits varies from road to road and is even absent in some certain areas.

Now, in this question we are told that the posted speed limit is 55 mph. Thus, from our definitions of speed limits above it is clear that A posted speed limit of 55 mph means that: You may drive 55 mph only under favorable conditions.

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4 0
2 years ago
A pencil costs $0.60 plus sales
lord [1]

Answer: 5%

Step-by-step explanation:

To find the sales tax, find the difference between before and after tax:

0.63 - 0.60 = 0.03

To find the percentage, divide the difference by the cost of the product:

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Multiply by 100 to find percent sales tax:

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8 0
3 years ago
Algebra help needed!!
Leni [432]
The population triples ( P × 3 ) every ten minutes...

So if ten minutes is reached there will be 1,200 bacteria.

Edited - missed the question
** The units for time should be in minutes.

P = 400 × 3^(t/10)

at t = 0 ; P = 400
at t = 10 ; P = 1,200

When P = 600
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Log(3/2) = Log(3^(t/10))
power rule
Log(3/2) = (t/10) Log(3)
10 × Log(3/2)/Log(3) = t

3.69 minutes the population will be at 600 bacteria
Unites for time are in minutes.
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3 years ago
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Artyom0805 [142]
<span>x−38.45=17.71 is your answer

</span>
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3 years ago
The parallel black lines are translated 4 units up. The green lines are the resulting image. Which choice describes the relation
zalisa [80]

Answer:

B!

Step-by-step explanation:

6 0
3 years ago
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