Solve the math problem

Mathematics

1 answer:

Sati [7]2 years ago

4 0

A transversal line,passes through two lines in the same plane at two distinct points. So,the answer is line n

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Modeling real life last week you finish level to of a video game and 32 minutes today you finish level 2 in 28 minutes what is t

rusak2 [61]

Answer:

-12.5%

Step-by-step explanation:

The percentage change in your time can be computed using ...

pct change = ((new value)/(old value) -1) × 100%

= (28/32 -1) × 100%

= (0.875 -1) × 100% = -12.5%

The time to finish level 2 decreased by 12.5%.

6 0

3 years ago

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:

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