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3 years ago

12

Multiplying Polynomials Multiple Choice

1 answer:

slamgirl [31]3 years ago

4 0

$(5 x + 1)( {x}^{2} + 8x + 3) \\ 5 {x}^{3} + 40{x}^{2} + 15x + {x}^{2} + 8x + 3 \\ 5 {x}^{3} + 41 {x}^{2} + 23x + 3$

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What is a reasonable estimate for the problem ? -3/2 multiply by ( -5 1/4 )

Nat2105 [25]

= -3/2 * -5 1/4
convert 5 1/4 to improper fraction

= -3/2 * -21/4
multiply numerators; multiply denominators

= (-3*-21)/(2*4)
multiply in parentheses

= 63/8
convert back to mixed number

= 7 7/8

ANSWER: Since the exact answer is the mixed number 7 7/8, a reasonable estimate is 8.

Hope this helps! :)

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3 years ago

Read 2 more answers

. can someone help pls

disa [49]

Answer:

The answer is 3,906.25

Step-by-step explanation:

All you have to do is divide 15,625 by 4! :)

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2 years ago

A marble is randomly selected from a bag. The probability of selecting a marble with dots on it is 0.2. The probability of selec

marin [14]

Answer:

0.5

Step-by-step explanation:

Let D be the event of selecting a marble with dots.

Let P be the event of selecting a purple marble.

The probability of selecting a marble with dots, P(D)=0.2

The probability of selecting a marble that is both purple and has dots, $P(D \cap P)=0.1$

We want to determine the probability of selecting a purple marble given that the marble has dots on it, P(P|D)

By the definition of conditional probability:

$P(P|D)= \dfrac{P(P \cap D)}{P(D)} \\= \dfrac{0.1}{0.2}\\ =0.5$

The probability of selecting a purple marble given that the marble has dots on it is 0.5.

4 0

3 years ago

Simplify. (-1/2√2)(-6√18) 18 -18 -36

olga_2 [115]

Hey!

Your answer is solved below/above idk wherever just see in the picture.

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3 years ago

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A department store buys 300 shirts for a total cost of $7,200 and sells them for $30 each. Find the percent markup.

Novosadov [1.4K]

Answer:

80%

Step-by-step explanation:

because 7200 / 300 equals 24 and 24 / 30 equals .8 so its 80% and if you want to check the answer you take 30 * .8 OR 80% and it gives you 24

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3 years ago

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