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3 years ago

Please Help, ASAP! I need help on a question about Piecewise-Defined Functions.

Mathematics

2 answers:

Norma-Jean [14]3 years ago

4 0

Answer: i GOTCHU VRO the answer is the second one on the top have a great day m8

Step-by-step explanation:

stepladder [879]3 years ago

3 0

Answer:

Bottom Left Graph

Step-by-step explanation:

I think it would be C also...

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help! I only have a certain amount of time.... easy points! The sum of 3 times a number and 4 is 13. Find the number.

Anni [7]

3x+4=13
3x=13-4
3x=9
x=9/3
x=3

The number is 3 :)

3 0

1 year ago

Read 2 more answers

(Uniform) Suppose X follows a continuous uniform distribution from 4 to 11. (a) Write down the PDF of X. (b) Find P(X ≤ 7). Roun

love history [14]

Answer:

a) $f(x)= \frac{1}{11-4}= \frac{1}{7}, 4 \leq x \leq 11$

b) $P(X\leq 7) = F(7) = \frac{7-4}{11-4}= 0.4286$

c) $P(5 < X \leq 7)= F(7) -F(5) = \frac{7-4}{7} -\frac{5-4}{7}= 0.2857$

d) $P(X >5 | X \leq 7)$

And we can find this probability with this formula from the Bayes theorem:

$P(X >5 | X \leq 7)= \frac{P(X>5 \cap X \leq 7)}{P(X \leq 7)}= \frac{P(5$

Step-by-step explanation:

For this case we assume that the random variable X follows this distribution:

$X \sim Unif (a=4, b =11)$

Part a

The probability density function is given by the following expression:

$f(x) = \frac{1}{b-a} , a \leq x \leq b$

$f(x)= \frac{1}{11-4}= \frac{1}{7}, 4 \leq x \leq 11$

Part b

We want this probability:

$P(X \leq 7)$

And we can use the cumulative distribution function given by:

$F(x) = \frac{x-a}{b-a}= \frac{x-4}{11-4}$

And replacing we got:

$P(X\leq 7) = F(7) = \frac{7-4}{11-4}= 0.4286$

Part c

We want this probability:

$P(5 < X \leq 7)$

And we can use the CDF again and we have:

$P(5 < X \leq 7)= F(7) -F(5) = \frac{7-4}{7} -\frac{5-4}{7}= 0.2857$

Part d

We want this conditional probabilty:

$P(X >5 | X \leq 7)$

And we can find this probability with this formula from the Bayes theorem:

$P(X >5 | X \leq 7)= \frac{P(X>5 \cap X \leq 7)}{P(X \leq 7)}= \frac{P(5$

7 0

2 years ago

John bought an odd shaped lot that was 100 feet deep, but the front footage was 160 feet and the length of the back side of the

Snowcat [4.5K]

This lot has the shape of a trapezoid. Regard the 2 different lengths as 160' and 80' and the width 100'

Applying the formula for the area of a trapezoid:

80' + 160'

A = ----------------- * 100' = 24000 ft^3

4 0

2 years ago

Read 2 more answers

One centimeter is equal to?

Sonja [21]

0.39 inches.
Or 0.4 if you want to round it ;3

3 0

2 years ago

Please please please help shenenrjjrjrjrjrjrjrbhrhrhrhrhrhfjfjrjdjjrjff

Alex

It is A sure do hope this helps

5 0

2 years ago