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3 years ago

Solve 4 + (-3) - 2 x (-6) A. -11 B. 12 C. -10 D. 13

Mathematics

1 answer:

Gennadij [26K]3 years ago

8 0

Answer:

Step-by-step explanation:

Using PEMDAS you start with multiplication first, so -2 multiplied by -6, which is positive 12. Then you go from left to right, so 4 +-3, or 4-3, which is 1. Then 1-12 is -11. So your final answer is A, -11.

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Alchen [17]

Answer:

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2. 1/2 = 0.5

3. 280

4. 23.09

5. 1/2 = 0.5

Step-by-step explanation:

1. height of probability density function

$\frac{1}{320-240} \\= \frac{1}{80}$

= 0.0125

2. probabilty that you will win the auction given a bid of 280

= $\frac{280-240}{320-240} \\=\frac{40}{80} \\= \frac{1}{2}$

3. mean secret service price

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4. the standard deviation of the above

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= 23.09

5. with a new bid of 300 dollars, probability you will win auction

= [(300-280)/(320-240)]/[(320-280)/(320-240)

= (20/80) / (40 /80)

= 0.25/0.5

= 0.5

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Read 2 more answers

The management of Ditton Industries has determined that the daily marginal revenue function associated with selling x units of t

barxatty [35]

Answer:

(a) The daily total revenue realized from the sale of 210 units of the toaster oven is $6,195.

(b) The additional revenue realized when the production (and sales) level is increased from 210 to 310 units is $1,400.

Step-by-step explanation:

The marginal revenue gives the actual revenue realized from the sale of an additional unit of the commodity given that sales are already at a certain level. The derivative R' of the function R measures the rate of change of the revenue function.

We know that the daily marginal revenue function is given by

$R'(x) = -0.1x+40$

(a) To find the the daily total revenue you must:

Integrate the daily marginal revenue function,

$\int R'(x)dx = \int(-0.1x+40)dx\\\\R(x)=-\int \:0.1xdx+\int \:40dx\\\\R(x)=-0.05x^2+40x+C$ ,

where C is a constant.

Find the value of C, using the fact that if you sell 0 units your daily revenue is $0.

$0=-0.05(0)^2+40(0)+C\\C=0$

$R(x)=-0.05x^2+40x$

The daily total revenue realized from the sale of 210 units of the toaster oven is

x = 210 units

$R(210)=-0.05(210)^2+40(210)\\R(210)=-210^2\cdot \:0.05+8400\\R(210)=-2205+8400\\R(210)=6195$

(b) To find the additional revenue realized when the production (and sales) level is increased from 210 to 310 units you must:

Find the daily total revenue realized from the sale of 310 units

$R(310)=-0.05(310)^2+40(310)\\R(310)=-310^2\cdot \:0.05+12400\\R(310)=-4805+12400\\R(310)=7595$

The additional revenue realized when the production (and sales) level is increased from 210 to 310 units is

$R(310)-R(210)=7595-6195=1400$

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4 years ago