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2 years ago

What is the solution set of the equation?

Mathematics

1 answer:

mihalych1998 [28]2 years ago

4 0

It would be 12 (B)
thats i beleive the answer

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Brianne can paint 120 square feet of walls in 34 hour.

kotegsom [21]

Good afternoon.

120square --- 34h
x square --- 1h
34x = 120
x = 120/34
x = 3,5 square

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3 years ago

What is the short form of 5000+100

kenny6666 [7]

Answer:

5000+100=5100 it is short form

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3 years ago

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Suppose you obtain a $1300 T note with a 9% annual rate paid monthly with Matt Trinity in six years how much interest will be pa

dolphi86 [110]

Answer:

Step-by-step explanation:

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3 years ago

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PLEASE! An item costs 410 before tax, and the sales tax is 32.80.

Norma-Jean [14]

Divide the amount of the tax by the cost of the item:

32.80 / 410 = 0.08

Multiply by 100:

0.08 x 100 = 8%

Answer: 8%

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2 years ago

The total monthly profit for a firm is P(x)=6400x−18x^2− (1/3)x^3−40000 dollars, where x is the number of units sold. A maximum

wlad13 [49]

Answer:

Maximum profits are earned when x = 64 that is when 64 units are sold.

Maximum Profit = P(64) = 2,08,490.666667$

Step-by-step explanation:

We are given the following information: $P(x) = 6400x - 18x^2 - \frac{x^3}{3} - 40000$ , where P(x) is the profit function.

We will use double derivative test to find maximum profit.

Differentiating P(x) with respect to x and equating to zero, we get,

$\displaystyle\frac{d(P(x))}{dx} = 6400 - 36x - x^2$

Equating it to zero we get,

$x^2 + 36x - 6400 = 0$

We use the quadratic formula to find the values of x:

$x = \displaystyle\frac{-b \pm \sqrt{b^2 - 4ac} }{2a}$ , where a, b and c are coefficients of $x^2, x^1 , x^0$ respectively.

Putting these value we get x = -100, 64

Now, again differentiating

$\displaystyle\frac{d^2(P(x))}{dx^2} = -36 - 2x$

At x = 64, $\displaystyle\frac{d^2(P(x))}{dx^2} < 0$

Hence, maxima occurs at x = 64.

Therefore, maximum profits are earned when x = 64 that is when 64 units are sold.

Maximum Profit = P(64) = 2,08,490.666667$

6 0

3 years ago