5. a) Which figure is the mapping diagram of the relation

Mathematics

2 answers:

Viefleur [7K]3 years ago

7 0

Answer:

b, since the others have the input and output on the wrong sides

lara31 [8.8K]3 years ago

4 0

The answer will be B :)

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A shoe store is having a sale where every pair of shoes cost $15. If you buy more than five pairs, you get a 10% discount. How m

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7(15) = 105

10% off means u r paying for 90%...
0.9(105) = 94.50 <=

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3 years ago

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ki77a [65]

Answer:

D) The function is always decreasing

Step-by-step explanation:

As you move along the x axis, the x value approaches: a) negative infinity when x < 0 and b) 0 when x > 0

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5. If "h" is positive how does the parabola move? If negative?

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Answer: positive values for h translate the parabola to the right, negative values for h translate the parabola to the left

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If 90 percent of automobiles in Orange County have both headlights working, what is the probability that in a sample of eight au

Marta_Voda [28]

Answer:

$P(X \geq 7) = P(X=7) +P(X=8)$

And we can find the individual probabilities using the probability mass function

$P(X=7)=(8C7)(0.9)^7 (1-0.9)^{8-7}=0.3826$

$P(X=8)=(8C8)(0.9)^8 (1-0.9)^{8-8}=0.4305$

And replacing we got:

$P(X \geq 7) = P(X=7) +P(X=8)=0.3826 +0.4305=0.8131$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest "number of automobiles with both headligths working", on this case we now that:

$X \sim Binom(n=8, p=0.9)$