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3 years ago

Solve the system of equation Y=4x-11 Y=x+13 X= Y =

Mathematics

1 answer:

Phoenix [80]3 years ago

5 0

Answer:

(8,21)

Step-by-step explanation:

Since both equations equal y, set both equaitions equal to each other

and solve for x

4x-11=x+13 , subtract x from both sides

3x-11=13, add eleven to both sides

3x=24, divide both sides by 3 to get x alone

x=8

Substitute x=8 into either equation to solve for y

y=4(8)-11

y=32-11

y=21

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A sink has two faucets: one for hot water and one for cold water. The sink can be filled by a cold water faucet in 3 minutes. If

iragen [17]

Answer: $6\ minutes$

Step-by-step explanation:

You can use the following formula:

$\frac{T}{A}+\frac{T}{B}=1$

You can say that "T" is the time (in minutes) for both faucets working together, "A" is the time (in minutes) for cold water faucet working alone and "B" is the time (in minutes) for hot water faucet working alone.

Based on the data given in the exercise, you can identify that:

$T=2\\A=3$

Therefore, substituting these values into the formula and solving for "B", you get that this is:

$\frac{2}{3}+\frac{2}{B}=1\\\\\frac{2}{B}=1-\frac{2}{3}\\\\\frac{2}{B}=\frac{1}{3}\\\\2=\frac{1}{3}B\\\\2*3=B\\\\B=6$

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2 years ago

You go to see family in another city. So far you have gone 120 miles. The total trip is 360 miles. What fraction of the total tr

Elena L [17]

Answer:

1/3

Step-by-step explanation:

120/360 = 12/36 = 2/6 = 1/3

6 0

2 years ago

I NEED HELP IM LATE PLEASE

Inga [223]

Answer:

9x, 8x+12

Step-by-step explanation:

x(2x+7)-2x(x-1)

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2 years ago

How to divide 288 by 30?

igor_vitrenko [27]

I took 288 and divided by 30 it gave me 9.6

And when i took 30 and divide it by 288 it gave me 0.104

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3 years ago

If it starts out at -10 degrees, what will the temperature be if it rises 30 degrees?

Bond [772]

add 30 to -10:

-10 + 30 = 20

Answer is B.

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3 years ago