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3 years ago

If f(x)=2x^2+3 then f(x-1)=2x^2+4x+5 true or false

Mathematics

1 answer:

TEA [102]3 years ago

7 0

Hello from Hello from MrBillDoesMath!

Answer:

False.

Discussion:

See attached file for discussion.

Thank you,

MrB

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Answer:

Step-by-step explanation:

B. Yes, because it passes the vertical line test, is the answer.

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2 years ago

Three cars are driving on a racetrack. The mean speed of the three cars is 100 miles per hour. Car X drives 109 miles per hour a

siniylev [52]

Answer:

Step-by-step explanation:

The mean is the average found by adding the sum of the data points and dividing by the number of them. Here there are 3 cars whose speeds are 109, 111, and Z or unknown. The mean of them is 100. Solve for Z.

100 =(109+111+Z)/3

300=220+Z

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The speed of Car Z is less than 100.

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3 years ago

An engine encounters a standard environment with a probability of 0.9, and a severe environment with a probability of 0.1. In a

kari74 [83]

Answer:

.077

.64935

Step-by-step explanation:

Let F= failure

let S= severe

we are given that

p(F|S')= .03

p(F|S)= .5

For the first question we are looking for f

we can solve for it by using the law of total probability

so in theory we want

F∩S+F∩S'

Using the conditional probability formula we can solve for the intersections

.03*.9+.5*.1= .077

For this question we are looking for S|F

to solve this use bayes thereom

$S|F=\frac{F|S*S}{F|S*S+F|N*N}=\frac{.5*.1}{.5*.1+.9*.03}=.649$ (or 50/77)

8 0

3 years ago