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Ne4ueva [31]
3 years ago
15

HELP IM REALLY BAD AT MATH! The area of a square is calculated as 4x² - 16x+16 square units. What is the length of one side of t

he square?
A. 2x-4
B. 4x-2
C. 2x+4
D. 4x+2
Mathematics
1 answer:
Readme [11.4K]3 years ago
3 0

Answer:

A. 2x-4

Step-by-step explanation:

2x-4 since when you factor this expression, you get (2x-4)^2. a square has equal sides and is calculated by side length squared, so simply take the square root of the known area (2x-4)^2 and you get 2x-4.

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Answer:

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Step-by-step explanation:

Our sample space is the total number of cards in a deck, n(S)=52

Event A: Event that she chooses a three card

Number of 3 cards in a deck, n(A)=4

Event B: Event that she chooses a seven card.

Number of <u>7 cards</u> in a deck, n(B)=4

In Probability, P(A or B)=P(A)+P(B)

P(A)=\dfrac{n(A)}{n(S)}= \dfrac{4}{52}= \dfrac{1}{13}\\P(B)=\dfrac{n(B)}{n(S)}= \dfrac{4}{52}= \dfrac{1}{13}\\P(A\: or \: B) = \dfrac{1}{13}+ \dfrac{1}{13}\\= \dfrac{2}{13}

The probability that Zhi Qing chooses is either a three or a seven is 2/13.

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3 years ago
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Julli [10]

Answer:

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Step-by-step explanation:

This is the absolute value function, which returns a positive value for any numbers (positive or negative).

For example,

| -9 | = 9

| 9 | = 9

| 0 | = 0

Now, the domain is from -8 to 7 and we want to find max and min value that we can get from this function.

If we look closely, putting 7 into x won't give us max value as putting -8 would do, because:

|7| = 7

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So, putting -8 would give us max value of 8 for the function.

Now, we can't get any min values that are negative, because the function doesn't return any negative values. So the lowest value would definitely be 0!

|0| = 0

and

ex:  |-2| = 2 (bigger),  |-5| = 5 (even bigger).

So,

Min Value = 0

Max Value = 8

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3 years ago
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