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UNO [17]
3 years ago
5

Help anyone can help me do this question,I will mark brainlest.​

Mathematics
1 answer:
postnew [5]3 years ago
7 0

Answer:

Step-by-step explanation:

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Salsk061 [2.6K]

Answer:

14x^2 - 21

Step-by-step explanation:

The area is

7 * (2x^2 -3)

Distribute

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3 0
3 years ago
Read 2 more answers
A concession stand at a sports stadium sells 600 bags of peanuts (each game) if the price of each bag is $4.00. For each $0.25 i
grin007 [14]

Answer:

Price = $4.50

Maximum revenue = $2,430

Step-by-step explanation:

The concession stand sells 600 bags of peanut at $4.00 (600, $4.00).

If there is a $1 increase in price, the number of bags old will decrease by 120, which mens that 480 bags of peanuts will be sold at $5.00 (480, $5.00).

Tracing a linear relationship between price and quantity sold with the two given points:

m = \frac{5-4}{480-600}\\ m=-\frac{1}{120}

P - P_0=m*(Q-Q_0)\\P-4.00=-\frac{1}{120} (Q-600)\\P= -\frac{1}{120}Q +9

The revenue function is given by the price multiplied by the quantity sold:

R=Q*P= (-\frac{1}{120}Q +9)*Q\\R=-\frac{1}{120}Q^2 +9Q

The value of 'Q' for which the derivate of the revenue function is zero, is the output level for which revenue is maximum:

R'=0=-\frac{2}{120}Q+9\\Q_{max} = 540\\P_{max} = -\frac{540}{120} +9\\P_{max} =\$4.50

The total revenue of 540 units at $4.50 per unit is:

R = \$4.50*540\\R=\$2,430

6 0
3 years ago
Evaluate the expression for the given values. (5 x - 4 y) 2 given x = 1 and y = -1.
Reika [66]

((5 \times 1) - (4 \times  - 1)  =  \\ 5 - ( - 4) =  \\ 5 + 4 =  \\ 9

3 0
3 years ago
Which fundraising event will bring in the most money ($) in 12 weeks? (Remember, 1 week = 5 school days) *
dedylja [7]

Cookie sales: 12 weeks divided by 2 weeks = 6 weeks x $360 = $2,160

Car wash: 12 weeks divided by 3 weeks = 4 weeks x $450 = $1,800

Recycling: 12 weeks divided by 4 weeks = 3 weeks x $600 = $1,800

Yard work: 12 weeks divided by 2/5 weeks = 30 x $80 = $2,400

4 0
3 years ago
What is the answer to this question. Screenshot attached
Butoxors [25]
Try a math app maybe photomath?
8 0
3 years ago
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