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vova2212 [387]
3 years ago
11

Is the Y value of the vertex of 4x squared plus 8X minus 8. help meee​

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
8 0

Answer:

y = -12

Step-by-step explanation:

You first calculate the x coordinate using the equation x = \frac{-b}{2a}, which in this case is \frac{-8}{8} = -1.

Then plug that x value into the equation to get the y coordinate:

4(-1)²+8(-1)-8 = -12

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At a dry cleaning store, it costs $1.79 to clean a man’s dress shirt and 6 times as much to clean a suit. Choose the answer that
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Find the midpoint of the segment with the following endpoints. (10, 7) and (5, 4)
KatRina [158]

Answer:

\frac{15}{2} , \frac{11}{2}

Step-by-step explanation:-

To find the midpoint, the equation we use is:-

\frac{x1 +x2}{2} , \frac{y1 + y2}{2}

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x2 = 5

y1 = 7

y2 = 4

Substituting the values in the equation, we get:-

\frac{10+5}{2} , \frac{7+4}{2}

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8 0
3 years ago
Is 9.99 rational or irrational
aleksley [76]

Answer:

Rational

Step-by-step explanation:

A rational number can be written as a fraction of the form.

\frac{a}{b}  \: where \: b \ne0

and a and b are integers.

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Hence in this case a=999 and b=100.

Since both are integers with b being a non-zero integer, we conclude that 9.99 is a rational number.

6 0
3 years ago
A jar contains 12 red marbles numbered 1 to 12 and 10 blue marbles numbered 1 to 10. A marble is drawn at random from the jar. F
klasskru [66]

Answer:

<h2>6/11</h2>

Step-by-step explanation:

Step one:

given data

sample space

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Step two:

Required

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Let the probabiilty be P(R)

P(R)= 12/22

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8 0
2 years ago
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