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3 years ago

Simplify the expression: 1.9b + 8.2(8.8 + 1.2b)

Mathematics

1 answer:

leva [86]3 years ago

7 0

Answer:

11.74b + 72.16

Step-by-step explanation:

In this question, we're going to simplify the expression.

Solve:

1.9b + 8.2(8.8 + 1.2b)

Use the distributive property.

1.9b + 72.16 + 9.84b

Combine like terms.

11.74b + 72.16

Since we can't simplify any further, 11.74b + 72.16 would be your answer.

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Find the midpoint of diagonal AC of ABCD

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Answer:

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Step-by-step explanation:

we have from the picture:

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C = (5, 1)

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so we have:

x1= -3 y1 = 5

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M = ((2/2) , (6/2))

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olga_2 [115]

We are given

$f=z^3 -x^2y$

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$v'=(\frac{-3}{\sqrt{29} } , \frac{2}{\sqrt{29} } , \frac{-4}{\sqrt{29} })$

now, we can find dot product to find direction of the vector

$dir=(gradf) \cdot (v')$

now, we can plug values

$dir=(50,-25,12) \cdot (\frac{-3}{\sqrt{29} } , \frac{2}{\sqrt{29} } , \frac{-4}{\sqrt{29} })$

$dir=(-\frac{150}{\sqrt{29} } - \frac{50}{\sqrt{29} } - \frac{48}{\sqrt{29} })$

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