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evablogger [386]

2 years ago

12

KHAN ACADEMY!

2 answers:

VARVARA [1.3K]2 years ago

7 0

Answer:

A

Step-by-step explanation:

11/25=.44

svet-max [94.6K]2 years ago

5 0

Answer:

A 0.44

Step-by-step explanation:

YOU'RE WELCOME

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kodGreya [7K]

Answer:

$y=-2\,(x+3)^2-3$

Step-by-step explanation:

Notice that they are asking you to write the equation of the parabola in vertex form, that is using the coordinates of the vertex $(x_v,y_v)$ in the expression:

$y-y_v=a\,(x-x_v)^2\\y=a\,(x-x_v)^2+y_v$

we can start by directly replacing the given vertex coordinates (-3, -3) in the expression, and then using the extra info on the point the parabola goes through in order to find the parameter $a$ :

$y=a\,(x-x_v)^2+y_v\\y=a\,(x+3)^2+(-3)\\y=a\,(x+3)^2-3\\-5=a\,(-2+3)^2-3\\-5=a\,(1)-3\\a=-5+3\\a=-2$

So, now we can write the full expression for the parabola:

$y=a\,(x+3)^2-3\\y=-2\,(x+3)^2-3$

8 0

3 years ago

4 out of 9 how many groups can be made?

Len [333]

Answer:

its a combination problem, so in your calculator put 9 nCr 4 and you'll get 126. i hope this helps. :)

Step-by-step explanation:

5 0

3 years ago

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4vir4ik [10]

81 - - -- - - -- - - -

7 0

3 years ago

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What are the coordinates of point A?<br><br> A. (5,4)<br> B. (4,5)<br> C. (4,6)<br> D. (6,4)

erica [24]

The answer is A . (5,4)

3 0

2 years ago

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Giving brainlyest if your answer is right

sineoko [7]

Answer:

-77

Step-by-step explanation:

give brainliest

6 0

2 years ago

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