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Helen [10]
3 years ago
15

Simplified form for 2x(y+3)-4xy?​

Mathematics
1 answer:
masya89 [10]3 years ago
8 0

Answer:

-2xy+6x

Step-by-step explanation:

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a bean plant grows at a constant rate for a month. after 10 days, the plant is 30 centimeters tall. after 20 days, the plant is
ANTONII [103]

Answer:

(y-30)=2(x-10)

Step-by-step explanation:        

We have been given that a bean plant grows at a constant rate for a month. after 10 days, the plant is 30 centimeters tall. after 20 days, the plant is 50 centimeters tall.

First of all we will find slope of our line using given points.

m=\frac{y_2-y_1}{x_2-x_1}

Upon substituting coordinates of our given points in slope formula we will get,

m=\frac{50-30}{20-10}

m=\frac{20}{10}=2

Therefore, slope of our given line is 2.    

Since the equation of a line in point slope form is (y-y_1)=m(x-x_1).

Upon substituting m=2 and coordinates of one point in above equation we will get,

(y-30)=2(x-10)

Therefore, the equation that models the height of the plant (y) after x days will be (y-30)=2(x-10).

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3 years ago
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V(t)=875-50t
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Use socratic instead of this
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I need help again?????
Ilya [14]

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Step-by-step explanation:

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Laylah as already spent 3 minutes on the phone,and she expects to spend 1 more minute with every phone call she routes.If she ro
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Answer:

Step-by-step explanation:

Let x represent the number of phone call that she routes.

Laylah has already spent 3 minutes on the phone and she expects to spend 1 more minute with every phone call she routes. This means that if she routes x phone calls, the total number of time that Layla would have spent on the phone is

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If she routes 23 phone calls, the total time that Layla would have spent on the phone in total is

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