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mariarad [96]
3 years ago
10

Can someone please solve y = x + 3 -2 x + 12

Mathematics
1 answer:
Gelneren [198K]3 years ago
4 0

Answer: y= -x + 15

Step-by-step explanation:

1.) Put the equation in 1 line: y= x + 3 - 2x + 12

2.) Subtract and add the x's together and the whole numbers together. (1x-2x) (3 + 12)

3.) Put the whole equation together again. y= -x + 15

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A cylindrical water trough has a diameter of 6 feet and a height of 2 feet. It is being filled at the rate of 4 ft^3/min. How fa
viva [34]
Volume of Cylinder V = πr²h

diameter = 6 feet, radius = 6/2 = 3 feet

dV/dt =  (dV/dh) * (dh/dt)  by change rule.

V =  <span>πr²h

dV/dh =  </span>πr² = π*3² = 9π  ft²<span>

dV/dt = 2 ft</span>³/min

<span>dV/dt =  (dV/dh) * (dh/dt)
</span>
2 ft³/min = 9π ft²   * (dh/dt)

9π ft²   * (dh/dt) = 2 ft<span>³/min
</span>
(dh/dt) = (2 ft³/min)/(9π ft<span>²)   

(dh/dt) = (2/</span>9π)  ft/min

So the water level is rising at  (2/9<span>π)  ft/min.</span>
8 0
4 years ago
Easy math problems!!!!!!
astraxan [27]
What 1+1= ??? I can’t figure it out
4 0
3 years ago
Read 2 more answers
Which function is the inverse of function f? <br> f(x)=9x^2–12
Leona [35]

Answer: D

Step-by-step explanation:

If the equation is f(x) = 9x^2 -12, you can solve for the inverse by switching the x and y like this.

x = 9y^2-12.

Then you solve for y.

x = 9y^2-12.

x+12=9y^2

y^2=(x+12)/9

y=sqrt((x+12)/9)

y=sqrt((x+12))/3 which is D

4 0
3 years ago
Julia completes her homework in an hour. She spends 7/12 of the time doing her math homework and 1/6 of the time practicing her
dsp73

Answer:

15 min

Step-by-step explanation:

Julia spends \frac{7}{12} in math.

and spends \frac{1}{6} in spelling.

Lets make \frac{1}{6}*2=\frac{2}{12} for calculation propuses.

Julia spends \frac{7}{12} +\frac{2}{6}=\frac{9}{12} doing her math and spelling homework.

And lets make 1 hour =\frac{12}{12}

\frac{12}{12}-\frac{9}{12} =\frac{3}{12} and \frac{3}{12} / 3 =\frac{1}{4}

So, Julia spends \frac{1}{4}  hour in reading.

If I divide an hour into 4 equal units, each unit equals 15 min, so 1 unit is 15 min.

Julia spends 15 min in reading.

4 0
3 years ago
1/2 pound : 5 days find the unit rate
juin [17]

Answer:

0.1

Step-by-step explanation:

To set this question up:

1/2 / 5

To solve this turn 5 into 5/1. Then multiply by the reciprocal. (1/5) 1/2 times 1/5 is 0.1

8 0
3 years ago
Read 2 more answers
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