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alexandr1967 [171]
2 years ago
12

What is the value of this expression when a = 4, b = -5, and c = -7?

Mathematics
1 answer:
Ganezh [65]2 years ago
8 0

Answer:

The value of the given expression is -878.08.

Step-by-step explanation:

Here, the given question is INCOMPLETE.

The complete question is:

Evaluate the expression for a = 4, b = -5, and c = -7. 4a^2b^{-2}c^3

Here, substitute the vale of a  = 4, b = -5 and c = -7, we get:

4a^2b^{-2}c^3  = (\frac{4a^2c^3}{b^2})  =  (\frac{4(4)^2(-7)^3}{(-5)^2})\\= (\frac{64 \times 343}{25})   =\frac{21,952}{25} =   878.08\\\implies 4a^2b^{-2}c^3 =   878.08 ( a = 4, b = -5 ,c = -7)

Hence, the value of the given expression is -878.08.

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A certain brand of jelly beans are made so that each package contains about the same number of beans. The filling procedure is n
pantera1 [17]

Answer:

p=0.063

Step-by-step explanation:

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X is N(375, 8)

YOu are collecting a sample size of

n = 8

Findings from the sample

\bar x =370\\

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(Left tailed test at 5% level)

Since sample size is small though sigma is known we use Z test, since norm

Mean difference = -5

Std error = \frac{8}{\sqrt{8} } =2.828

Test statistic t = mean diference / std error = \frac{-5}{2.828} \\=-1.768

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7 0
3 years ago
What is the coefficient of the second term of the trinomial?
marin [14]
The coefficient of the second term is 18.

What you do is you FOIL the terms:
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3 years ago
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Answer:

25

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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