Match the expression with its name. 9X4

The scale on map 1inch:3miles The movies is 5 inches on the map from the house. How far is the movies actually from the house?

nignag [31]

15 miles cause you do 5 times 3 and you get 15 miles

7 0

3 years ago

A deck of card is made up of 4 suits: clubs, diamonds, hearts and spades. each suit has 13 cards ranging from: 2,3,4,5,6,7,8,9,1

Amiraneli [1.4K]

The probability of drawing a 7 or 8 from a decl of playing cards is 2/13.

4 0

4 years ago

A store has been selling 100 Blu-ray disc players a week at $600 each. A market survey indicates that for each $40 rebate offere

Sav [38]

Answer:

The rebate should be $220

Step-by-step explanation:

Demand Curve

It's the relationship between price (P) and quantity (Q) demanded a certain product or service.

(a) We need to find the function that relates both magnitudes assuming a linear equation. The equation of a line can be found with the point-point formula:

$\displaystyle Q-Q_1=\frac{Q_2-Q_1}{P_2-P_1}(P-P_1)$

Two sets of data are given: 100 Blu-ray disc players are sold a week at $600 each. The ordered pair for this condition is (P,Q)=(600,100).

The other point comes from the market survey: The number of units sold will increase by 80 (100+80=180) when the price goes down $40 (600-40=560). The new point is (P,Q)=(560,180)

We set up the equation of the demand

$\displaystyle Q-100=\frac{180-100}{560-600}(P-560)$

Rearranging

$-40Q+4000=80P-44800$

Or

$80P+40Q=48800$

Simplifying

$2P+Q=1120$

(b) The revenue function is Q times the price

$R=Q.P$

Solving the equation of the demand for P

$\displaystyle P=\frac{1120-Q}{2}$

Thus, the revenue is

$\displaystyle R=Q\cdot \frac{1120-Q}{2}$

$\displaystyle R=\frac{1120Q-Q^2}{2}$

(c) To find the optimum value of the revenue, we take the derivative of R and equate to 0

$\displaystyle R'=\frac{1120-2Q}{2}=560-Q=0$

Solving

Q=560 units a week

For which the revenue is

$\displaystyle R=\frac{1120(560)-560^2}{2}$

$R=\$156,800$

And the price is

$\displaystyle P=\frac{1120-560}{2}=280$

$P=\$280$

The rebate should be $600-$280=$220

4 0

3 years ago

HELP !!! will give brainliest. must show work so i know what to do next time :)))

WINSTONCH [101]

Answer:

number 2

Step-by-step explanation:

3 0

3 years ago

Answer for when sam goes to a restaurant, he always tips the server $2 plus 10% of the cost of the meal. if sam's distribution o

STatiana [176]

Given that Sam's distribution of meal costs has a mean of $9 and a standard deviation of $3, this means that the range of Sam's meal cost that are within one standard deviation is given by ($9 - 3, $9 + 3) = ($6, $12).

Given that Sam always tips the server $2 plus 10% of the cost of the meal, this means that when the cost of the meal is $9, Sam tips $2 + (0.1 x 9) = $2 + $0.9 = $2.90

Therefore, the mean of the distribution of Sam's tips is $2.90

Similarly, the range of Sam's tips that are within one standard deviation is given by ($2 + 0.1(6), $2 + 0.1(12)) = ($2 + 0.6, $2 + 1.2) = ($2.6, 3.2) = ($2.9 - $0.3, $2.9 + $0.3)

Therefore, the standard deviation of the distribution of Sam's tips is $0.3

8 0

3 years ago

Match the expression with its name. 9X4 - 3x + 4