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3 years ago

13. A test had four challenging questions (7 points each) and twenty-four easy questions

Mathematics

1 answer:

jek_recluse [69]3 years ago

8 0

Answer:

i need pointssssss plssss

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The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift.

garik1379 [7]

Answer:

The probability that X is less than 32 minutes is 0.736.

Step-by-step explanation:

Given : The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift. If X has an average value of 24 minutes.

To find : What is the probability that X is less than 32 minutes?

Solution :

If X has an average value of 24 minutes.

i.e. $\lambda=24$

The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift.

The exponentially function is $\frac{1}{\lambda}e^{-\frac{x}{\lambda}}$

The function form according to question is

$f(x)=\{\frac{1}{24}e^{-\frac{x}{24}}, x>0\}$

The probability that X is less than 32 minutes is

$P[x$

Therefore, the probability that X is less than 32 minutes is 0.736.

7 0

3 years ago

Solve for x.<br> -2x + 6 ≤ 20<br><br> Please include steps.

s2008m [1.1K]

I hope this is helpful and sorry for my handwriting

5 0

3 years ago

Please Help Me With This file Below

Advocard [28]

The probability of Julia picking 49 is 1/100 ( one number out of 100)

The probability of Shelly picking 49 is also 1/100 ( one number out of 100)

The probability of both picking the same number is

1/100 x 1/100 = 2/100 = 1/50 = 0.02 = 2%

5 0

4 years ago

Like terms as 6p²q is?

seraphim [82]

Answer: Similar like terms of 6p²q is :

>2p²q

>4p²q

>9p²q

HOPE IT HELPS YOU

HAVE A GOOD DAY ❤️☺️

8 0

3 years ago

What is the equation of a line that is parallel to 2x+3y=3 and passes through the point (3, −4) ? Enter your answer in the box.

adell [148]

(3,-4) is your x and y. Plug it in the equation so,

For x,

2x+3y=3
2x+3(-4)=3
2x-12=3
2x=12+3
2x=15
2x/2=15/2
x=7.5

For y,

2(3)+3y=3
6+3y=3
3y=-6+3
3y=-3
3y/3=-3/3
y= -1

8 0

3 years ago