What are the x intercepts of the graph of the function f(x)=x2+4x-12

1 answer:

6 0

Set the function equal to zero and solve for x. 0=x^2+4x+12 factors to 0=(x-2)(x+6) which gives you intercepts of x=2 or -6.

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A test has 6 multiple choice questions, each with 4 alternatives. What is the probability of guessing 5 or more questions correc

ira [324]

Answer:

0.0009765625‬

Step-by-step explanation:

Each multiple choice question has 4 equally likely alternatives.

Hence, probability of guessing the right answer for 1 question is $\frac{1}{4}$ = 0.25

Hence, probability of guessing the wrong answer is $\frac{1}{4}$ = 0.75

The probability of guessing 5 or more questions correctly = probability of guessing 5 questions correctly & 1 question wrong + probability of guessing 6 questions correctly

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