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3 years ago

Consider the function f(x) = x2 + 12x + 11. x-intercepts?

Mathematics

2 answers:

IrinaK [193]3 years ago

8 0

The x-intercepts of this function are -11 and -1.

The easiest way to find the intercepts of this graph is by factoring. To factor a quadratic, we look for factors of the last number, that add up to the middle number. Below are the factors of the last number.

1 and 11

-1 and -11

Now we look for one that adds up to positive 12.

1 and 11

-1 and -11

Since these two add up to the middle number, we can use them in parenthesis with x + and factor. If there was not a pair, we would then have to use the quadratic equation.

f(x) = (x + 1)(x + 11)

Now to solve for the x-intercepts, we set each parenthesis equal to 0 and solve for x.

x + 1 = 0

x = -1

x + 11 = 0

x = -11

Nitella [24]3 years ago

6 0

Answer:

x intercept: (-1,0) & (-11,0)

y intercept: (0,11)

Step-by-step explanation:

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denis-greek [22]

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Let the speed of the car is c and speed of the plane is p.

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d = ts, where d- distance, t- time, s - speed

Find the time for car and plane and their difference.

t = d/s = 315/c

<h3 /><h3>Plane</h3>

t = d/s = 315/p = 315/(7c) = 35/c

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2 years ago

Can somebody please help me and quick? thxs

zmey [24]

The answer is 15%

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3 years ago

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taurus [48]

9514 1404 393

Answer:

P(F|A) = 35%

Step-by-step explanation:

P(F|A) = P(F&A)/P(A) = 7%/20% = 0.35

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_____

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