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elena55 [62]
3 years ago
9

Evulate a^2 - b^2 if a=4 and b= -2

Mathematics
1 answer:
Helen [10]3 years ago
8 0

Answer:

20

Step-by-step explanation:

4^2 = 16

-2^2 =-4

16 -(-4) =20

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gayaneshka [121]

Answer:

The expression f(200) depicts the value of the concentration of the pollutant, which when substituted in the expression T = f(P) will give the value of the thickness of the pelican eggs.

Step-by-step explanation:

Since we are given that T = f(P)

Where T = thickness of the eggs

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Considering f(200) comparing to f(P)

The expression f(200) depicts the value of the concentration of the pollutant, which when substiuted in the expression T = f(P) will give the value of the thickness of the pelican eggs.

i.e substituted the value of the concentration in ppm to get the thickness of the pelican eggs in mm. since the expression shows thickness of pelican eggs as a function of the concentration. for every 200ppm of concentration, the numerical value of the thickness of pelican eggs can be gotten.

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4 0
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podryga [215]

Answer:

A: (4, -2)

B: (-3, -3)

C: (-2, 5)

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Step-by-step explanation:

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goblinko [34]
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Answer:

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Step-by-step explanation:

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