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4 years ago

Y-2x=3 solve the equation for y

Mathematics

2 answers:

Radda [10]4 years ago

4 0

Answer: y=2x+3

Step-by-step explanation:

Add 2x to both sides.

−2x+y+2x=3+2x

y=2x+3

lesantik [10]4 years ago

4 0

Answer:

Y = 2x + 3

Step-by-step explanation:

First you are given the equation y - 2x = 3

You are solving for Y, so you have to add 2x to both sides to isolate the variable Y

y - 2x = 3

+2x +2x

Then you are left with your answer Y = 2x + 3

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The mass, m grams, of a radioactive substance, present at time t days after first being observed, is given by the formula m=24e^

Reika [66]

Answer:

(i) The value of m when t = 30 is 13.2

(ii) The value of t when the mass is half of its value at t=0 is 34.7

(iii) The rate of the mass when t=50 is -0.18

Step-by-step explanation:

(i) The m value when t = 30 is:

$m = 24e^{-0.02t} = 24e^{-0.02*30} = 13.2$

Then, the value of m when t = 30 is 13.2

(ii) The value of the mass when t=0 is:

$m_{0} = 24e^{-0.02t} = 24e^{-0.02*0} = 24$

Now, the value of t is:

$ln(\frac{m_{0}/2}{24}) = -0.02t$

$t = -\frac{ln(\frac{24}{2*24})}{0.02} = 34.7$

Hence, the value of t when the mass is half of its value at t=0 is 34.7

(iii) Finally, the rate at which the mass is decreasing when t=50 is:

$\frac{dm}{dt} = \frac{d}{dt}(24e^{-0.02t}) = 24(e^{-0.02t})*(-0.02) = -0.48* (e^{-0.02*50}) = -0.18$

Therefore, the rate of the mass when t=50 is -0.18.

I hope it helps you!

3 0

3 years ago

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ladessa [460]

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4 years ago

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Kobotan [32]

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3 years ago

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4. A driver set a goal to earn $2,000 in March. He receives a base salary of $1,000 per month as well as 20%

mariarad [96]

Answer:

X=$5000 in sales

Step-by-step explanation:

You can write an equation in slope-intercept to find an answer.

y=0.2x+1000, 20% commission is the slope and the base pay is the y-intercept.

Now, just plug in 2000 for y.

2000=0.2x+1000, subtract 1000.

1000=0.2x, Multiply by 5 to get x by itself.

5000=x.

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3 years ago

Please answer and explain If I’m correct you subtract, right?

krek1111 [17]

You will first take 6.5*10000=650000
then 2.5*100=2500
actor that u subtract 650000-2500=647500

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3 years ago