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mamaluj [8]
2 years ago
8

Parabolas in geometry. i need help please

Mathematics
1 answer:
natali 33 [55]2 years ago
7 0

Answer:

OPtion B

Step by step explanation:

Lets plug in a random value for x.

Lets say 5 is x

-8(-5-5)=(y+1)^2

5-5 = 0

-8(0) = 0

0 = (y+1)^2

Square root of both sides

0 = y+1

subtract one from both sides

-1 = y

that means the x is 5 and the y is -1. Option B illustrates exactly that!

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That’s the correct answer

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vodka [1.7K]

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Plug it into a calculator if they are not correct.

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List any restrictions on the domain for the equation <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%2B9%7D%7Bx%2B2%7D%20" id="
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lukranit [14]
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3 years ago
Style Color regular light blue loose fit indigo boot cut washed slim fit black blue a. How many possible pairs of jeans are ther
-BARSIC- [3]

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Explanation:


1) Start making clear the data in the table.

There are four different styles: regular, loose fit, boot cut, and slim fit.

There are five different colors: light blue, indigo,washed, black, and blue.


2) Question a:  How many possible pairs of jeans are there if each pair has one style and one color?


Since you can combine every style with every color, you can just use counting principle: the combinations of m and n equals m × n.


So, 4 × 5 = 20.


And the answer is that there are 20 possible pais.


3) Question b. Suppose you have one pair of jeans of each possible style and color in the table. What is the probability of choosing a pair of black jeans at random?


i) Probability = number of positive events / number of possible events


ii) Positive events: 4 (because there is one black jean of each style)


iii) Possible events: 20 (the 20 different pairs)


iv) Probability = 4 / 20 = 1 /5

7 0
3 years ago
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