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3 years ago

75. Simplify the expression: -2x(4x^2 - 5x + 3)

Mathematics

1 answer:

Karolina [17]3 years ago

3 0

-2x(4x² - 5x + 3) Distribute/multiply -2x into (4x² - 5x + 3)

(4x²)(-2x) - (5x)(-2x) + (3)(-2x)

-8x³ + 10x² - 6x

Your answer is the 3rd option

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If each point in the diagram can act as an endpoint, how many distinct line segments can be formed using the set of points

sdas [7]

Answer:

Option D 6 is the answer.

Step-by-step explanation:

the given points are A, D, C and B. If each point in the diagram can act as end points, we have to calculate number of distinct line segments formed.

This ca be calculated in two ways.

(1) We will form the line segments

AB, AC, AD, BC, BD, DC

Therefore 6 segments can be formed.

(2) By combination method

Number of segments = $^{4}C_{2}$

= $\frac{4!}{2!2!}=\frac{4\times 3\times 2\times 1}{(2\times 1)\times (2\times 1)}$

= $\frac{4\times 3}{2\times 3}=\frac{12}{2}$

= 6

Option D 6 is the answer.

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2 years ago

Read 2 more answers

Easy geometry <br> I’m stuck pls help<br> Show work :)

Lynna [10]

Answer:

x=9.5

NMR= 18°

Step-by-step explanation:

MN bisects PMN so NMR is equal to PMN making it also 18° so with this info we can now find x

(4x-2)=36

4x=38

x=9.5

8 0

3 years ago

I need help on #5,6, and 7

denpristay [2]

5.
$f(3) = 4 \times 3 - 3 = 12 - 3 = 9$
6.
$f(0) = 4 \times 0 - 3 = 0 - 3 = - 3$
7.
$f( - 7) = 4 \times ( - 7) - 3 = - 28 - 3 = - 31$

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3 years ago

If the input is o, what is the output?

Alexandra [31]

Answer:

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Step-by-step explanation:

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2 years ago

Dave has a board that is

Naya [18.7K]

Answer:

The answer is 1 3/8 (B)

Step-by-step explanation:

3 1/4 - 1 7/8 = 1 3/8

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2 years ago