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3 years ago

What is the slope intercept form of the linear equation x + 4y = 12

Mathematics

2 answers:

Ber [7]3 years ago

7 0

Y= -1/4x + 3

i need the brainliest answer please

vitfil [10]3 years ago

7 0

X+4y=12
-x from each side to isolate the y term:
4y=-x+12
Divide everything by 4 so that 4y become just y:
y=-1/4x+3

Hope this helps :)

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A motorboat takes 5 hours to travel 150 miles going upstream. The return trip takes 3 hours going downstream. What is the rate o

lys-0071 [83]

Answer:

The rate of the boat in still water is 40 miles per hour

The rate of the current is 10 miles per hour

Step-by-step explanation:

we know that

The speed or rate is equal to divide the distance by the time

Let

x ----> the rate of the current (miles per hour)

y ----> the rate of the boat in still water (miles per hour)

we have that

going upstream

$y-x=\frac{150}{5}$

$y-x=30$ ----> equation A

going downstream

$y+x=\frac{150}{3}$

$y+x=50$ ----> equation B

Solve the system of equations by elimination

Adds equation A and equation B

$y-x=30\\y+x=50\\------\\y+y=30+50\\2y=80\\y=40$

Find the value of x

$y+x=50$

$40+x=50$

$x=10$

therefore

The rate of the boat in still water is 40 miles per hour

The rate of the current is 10 miles per hour

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Answer:

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The outside temperature at midnight us -7° C . By 11 am the temperature has risen by 12°C what is the temperature at 11 am

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Answer:

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Step-by-step explanation:

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