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3 years ago

Please help me this is a test

Mathematics

1 answer:

Triss [41]3 years ago

7 0

Answer:

I think it should be "b"

Step-by-step explanation:

It should be B as the line first increases then the elevation stays constant so it is a horizontal line and then it decreases

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Riya buys 9 square paving slabs, each with a side of 1m. She lays them in the form of square.

madam [21]

Answer:

Step-by-step explanation:

The slabs are arranged in a 3×3 matrix. Each side is 3 m long. The perimeter is 4×3 = 12 meters.

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3 years ago

F(-4)f(x) = x^2 -3x + 9

olganol [36]

Here you go. Hope this helps! :)

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3 years ago

The total cost (in dollars) of producing x food processors is C(x) = 2500 + 50x -0.28.

Darya [45]

Answer:

The exact cost of producing the 21st food processor is $38.52.

The marginal cost to approximate the cost of producing the 21st food processor is $38.24

Step-by-step explanation:

Consider the provided function.

$C(x) = 2500 + 50x -0.28x^2$

(A) Find the exact cost of producing the 21st food processor

The exact cost producing 21st food processor is C(21)-C(20)

Substitute x=21 in above function.

$C(x) = 2500 + 50(21) -0.28(21)^2$

$C(x) = 2500 +1050 -123.48$

$C(x) = 3426.52$

Substitute x=20 in above function.

$C(x) = 2500 + 50(20) -0.28(20)^2$

$C(x) = 2500 +1000-112$

$C(x) = 3388$

The exact cost producing is:

$C(21)-C(20)=3426.52-3388=38.52$

Hence, the exact cost of producing the 21st food processor is $38.52.

Part (B) Use the marginal cost to approximate the cost of producing the 21st food processor,

To find the marginal cost first differentiate the function with respect to x.

$C(x) = 2500 + 50x -0.28x^2$

$C'(x) =50-0.56x$

Now substitute x=21 in above function.

$C'(x) =50-0.56(21)$

$C'(x) =50-11.76$

$C'(x) =38.24$

The marginal cost to approximate the cost of producing the 21st food processor is $38.24

5 0

3 years ago

ILL GIVE BRAINIEST TO THE CORRECT ANSWER!!!

lesya692 [45]

Answer:

Step-by-step explanation:

example -2 is smaller than 1. and -7 is smaller than -2

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3 years ago

Please give a simple summary of log functions.

Bess [88]

Logarithmic functions are the inverses of exponential functions. The inverse of the exponential funtion y = ax is x = ay. The logarithmic function y = logax is defined to be equivalent to the exponential equation x = ay. A logarithm is really nothing more than an exponent.

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4 years ago