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ozzi
2 years ago
12

Y=x^2-2x-15. What is the vertex of the parabola?

Mathematics
1 answer:
iris [78.8K]2 years ago
7 0

Answer:

The vertex is (1,-16)

Step-by-step explanation:

Brainliest please

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The equation v/2 -21=-15 is solved in several steps below.
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Answer:

V/2 - 21 = -15

V/2 - 21 + 21 = -15 + 21

V/2 + 0 = 6

V/2 * 2 = 6 * 2

V = 12

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Megan is sitting in her car in a parking lot. The car next to her pulls forward.If Megan is looking only at the car next to her
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8 0
3 years ago
Read 2 more answers
Evaluate the expression below when x = -2. x2 − 8 x + 6
nordsb [41]
Solve for x over the real numbers:x = -2. x^2 - 8 x + 6
Hint: | Rewrite the right hand side of the equation.-2. x^2 - 8 x + 6 = -2 x^2 - 8 x + 6:x = -2 x^2 - 8 x + 6
Hint: | Move everything to the left hand side.Subtract -2 x^2 - 8 x + 6 from both sides:2 x^2 + 9 x - 6 = 0
Hint: | Write the quadratic equation in standard form.Divide both sides by 2:x^2 + (9 x)/2 - 3 = 0
Hint: | Solve the quadratic equation by completing the square.Add 3 to both sides:x^2 + (9 x)/2 = 3
Hint: | Take one half of the coefficient of x and square it, then add it to both sides.Add 81/16 to both sides:x^2 + (9 x)/2 + 81/16 = 129/16
Hint: | Factor the left hand side.Write the left hand side as a square:(x + 9/4)^2 = 129/16
Hint: | Eliminate the exponent on the left hand side.Take the square root of both sides:x + 9/4 = sqrt(129)/4 or x + 9/4 = -sqrt(129)/4
Hint: | Look at the first equation: Solve for x.Subtract 9/4 from both sides:x = sqrt(129)/4 - 9/4 or x + 9/4 = -sqrt(129)/4
Hint: | Look at the second equation: Solve for x.Subtract 9/4 from both sides:Answer:  x = sqrt(129)/4 - 9/4 or x = -9/4 - sqrt(129)/4
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3 years ago
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When measuring forecast error, which forecasting error expresses the forecast error as a percentage from the mean?
oee [108]
Mean Absolute Percent Error, MAPE
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3 years ago
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