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Temka [501]
3 years ago
10

PLEASE HELP MATH 11. And 12.

Mathematics
1 answer:
Serggg [28]3 years ago
6 0

i Don't know the answer is true or not..but i try my best

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4x2 + 4x - 2y2 +3y, when x is equal to -2 and y is equal to 3?
ladessa [460]

Answer

-1

Step-by-step explanation:

Just plug in the numbers.

5 0
3 years ago
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(1.75)^2 in expanded form
s2008m [1.1K]

Answer:

1.75 x 1.75

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3 0
2 years ago
The weekly sales of Honolulu Red Oranges is given by q = 990 − 22p. Calculate the price elasticity of demand when the price is $
elena55 [62]

Answer:

E = -2. The demand is going down by 2% per 1% increase in price at that price level.

The price that gives a maximum revenue is $22.5. The maximum revenue is $9112.5

Step-by-step explanation:

The overall demand formula: Q = aP + b

Q = 990 - 22P

<u>Demand elasticity:</u>

At P = $30, the Q = 990 - 22×30 = 330. a = \frac{dQ}{dP} = -22

The formula for demand elasticity: E = \frac{dQ}{dP}×\frac{P}{Q}

Demand elasticity at $30: E = -22 × \frac{30}{330} = -2

So, The demand will be going down by 2% if 1% increase in price.

<u>Revenue:</u>

R = P×Q = P×(990 - 22P) = -22P² - 990P

R' = -44P - 990. The revenue is maximum when R' = 0

⇔0 = -44P - 990 ⇔ P = $22.5

At the P = $22.5, the Q = 990 - 22×22.5 = 495.

The maximum revenue = $22.5×495 = $11,137.5

7 0
3 years ago
1 L of a 78% acid solution was mixed with 6 L of a 64% acid solution. Find the concentration of the new mixture.
JulijaS [17]

The first solution contributes 0.78*1 = 0.78 L of acid.

The second contributes 0.64*6 = 3.84 L of acid.

There will be 7 L total of the new solution, and 3.84 + 0.78 = 4.62 total L of acid in it. So the new solution has a concentration of 4.62/7 = 0.66, or about 66%.

8 0
3 years ago
Can I have these questions answered,
weeeeeb [17]
1. 37.0952380952 or if rounded 38
2. 49.05 or if rounded 49.1 or 49
3. 2.84375 or if rounded 2.8 or 3
3 0
3 years ago
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