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Ierofanga [76]
2 years ago
5

By factoring, identify the zeros of the quadratic function f (x) = x²-9x-22

Mathematics
1 answer:
vovikov84 [41]2 years ago
7 0

Answer:

x= -2, x= +11

Step-by-step explanation:

I hope this is right!

To factorise, we need two numbers that add to make -9 and multiply together to make -22.

2 - 11 works, so we put it in the brackets in this order.

(x + 2) (x - 11)

so x + 2 = 0 and x - 11 =0

but we could also simplify this to say that x could be either -2 or + 11.

I hope this helps.

Have a lovely day.

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Answer:

  $562,500 per hour

Step-by-step explanation:

The cost will be a minimum where C'(x) = 0.

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  x = 0.7/0.56 = 1.25

The cost at that production point is ...

  C(1.25) = (0.28×1.25 -0.7)1.25 +1 = -0.35×1.25 +1 = 0.5625

The minimum production cost is $562,500 per hour for production of 1250 items per hour.

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<em>Additional comment</em>

This is different than the minimum cost <em>per item</em>. This level of production gives a per-item cost of $450. The minimum cost per item is $358.30 at a production level of 1890 per hour.

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2 years ago
A cell phone retailer used a mark-up rate of 60% on a cellphone case that originally cost $5. To find the new price of the case
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3 years ago
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Naily [24]

Answer:

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Step-by-step explanation:

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The vertex of the function F(x) is the origin (0,0)

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Applying the rule of the translation to F(x)

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Answer:

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