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zavuch27 [327]
3 years ago
12

(-12)/ [-7) + 5] - (-7) 4 Help me plz

Mathematics
1 answer:
wariber [46]3 years ago
6 0

Answer: 34

Step-by-step explanation:

First do the equation between "[" and "]". (-7+5=-2) Then divide. (-12/-2=6) Then do the multiplication. (-7*4=-28) Subtract the last two numbers. (6-(-28)=34)

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HI can you help me with this problem?The quantity demanded x for a certain brand of MP3 players is 300 units when the unit price
Vlad [161]

The demand equation is P = -0.05x + 105

STEP - BY - STEP EXPLANATION

What to find?

<em>The demand equation.</em>

The following information is used to solve the problem.

If (x₁ , y₁) and (x₂, y₂) are any dinstinct points on a line a non-vertical line L, then the equation of the line that has a slope(m) and passes through the point (x₁ , y₁) is given by the formula below:

y-y_1=_{}\frac{y_2-y_1}{x_2-x_1}(x-x_1)

Assume p, be the unit price and x be the demand when the price is $p.

From the question given, when the unit price x = 300 units, the demand p = $90 and when the unit price x = 1300 units, the demand p = $40

This means the demand curve passes through the points (300, 90) and (1300, 40).

Assume the demand equation is linear, then the line of the equation passes through the points (300, 90) and (1300, 40).

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y=p x₁ =300 y₁ = 90 x₂ = 1300 y₂=40

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Open the parenthesis.

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