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Karo-lina-s [1.5K]
2 years ago
5

I will give brainiest to whoever answers correctly !!

Mathematics
1 answer:
KonstantinChe [14]2 years ago
4 0

Answer:

The number of units sold increased by \mathbf{11.2\%}

Step-by-step explanation:

Vacuum dealer sold units in 2011 = 420

Vacuum dealer sold units in 2012 = 467

We need to find percent increase or decrease

Since, In 2012 units sold are greater than 2011, so there will be percent increase.

The formula used is: Percent\:Increase=\frac{New\:Value-Original\:Value}{Original\:Value}\times 100

We have New Value (Units sold in 2012) = 467

Original Value (Units sold in 2011) = 420

Percent increase is:

Percent\:Increase=\frac{New\:Value-Original\:Value}{Original\:Value}\times 100\\Percent\:Increase=\frac{467-420}{420}\times 100\\Percent\:Increase=\frac{47}{420}\times 100\\Percent\:Increase=11.2\%

So, The number of units sold increased by \mathbf{11.2\%}

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Answer:

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Step-by-step explanation:

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3 years ago
What is the equation of the line whose slope is 1/3 and y-intercept is -4?
faltersainse [42]

Answer:

y=1/3x-4

Step-by-step explanation:

the slope-intercept format of the line is y=mx+b, where m is the slope and b is the y intercept.

we are given the slope (1/3) and the y intercpet (-4).

substitute the numbers into the equation

y=1/3x-4

the answer is y=1/3x-4

hope this helps!

3 0
2 years ago
Brandon earns $6 for every shirt he sell.which equation could Brandon use to determine the amount of money he earns for any numb
maw [93]
I got B. Hope it helps 
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2 years ago
Solve the equation 18=n-18<br><br>n=_____​
Maksim231197 [3]

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Step-by-step explanation:

7 0
3 years ago
Solve (3x+8)(y^2+4) dx +4
Anna35 [415]

It's been four years since I last did a problem of this particular nature. :)


Try this: divide both sides of the given equation by (x^2-5x+6), obtaining


(3x+8)(y^2+4)          + 4y(x^2+5x+6) dy

-------------------- dx + ------------------------- dy = 0

x^2+5x + 6                         x^2+5x + 6


This gives us:


(3x+8)(y^2+4)

-------------------- dx + 4ydy = 0

(x+2)(x+3)


Now divide all 3 terms by y^2+4:


3x+8

--------------- dx + 4ydy = 0 This completes the separation of variables.

(x+2)(x+3)


Now we'll need to integrate each of the 3 terms.


3x+8

--------------- dx + 4ydy = 0 can be re-written in the form

(x+2)(x+3)


3x     +8              A           B

--------------- = --------- + ---------- We will need to determine the values

(x+2)(x+3)        x+2       x+3 of A and B (partial fraction expansion).


I trust you know how to do this; if not, let me know and I'll help you with that also.


I obtained B=2 and A = 1. You might want to verify that 1/(x+2) + 2/(x+3) =


3x+8

-------------- .

(x+2)(x+3)


Integrating the left side of this d. e. results in ln(x+2) + ln(x+3).

Integrating 4ydy results in 4*y^2/2, or 2y^2.


Integrating 0 results in a constant, C.


Thus,


ln(x+2) + ln(x+3) + 2y^2 = C is the solution of this d. e.


7 0
2 years ago
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