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3 years ago

Question 1 of 10

Mathematics

2 answers:

dimaraw [331]3 years ago

6 0

It’s c because if you subtract 9 from both sides you will get -4.

Margarita [4]3 years ago

5 0

Answer:

It is C. x=9

Step-by-step explanation:

You change the -13 to 13 because you want to cancel it out so 13-4 is 9... Hope this helps :)

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The final exam grade distribution for all students in the introductory statistics class at a local community college is displaye

Alex73 [517]

The mean of the discrete distribution that models this situation is of 2.98.

<h3>What is the mean of a discrete distribution?</h3>

The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.

Considering the table, the probability distribution is given by:

P(X = 4) = 0.4.

P(X = 3) = 0.32.

P(X = 2) = 0.17.

P(X = 1) = 0.08.

P(X = 0) = 0.03.

Hence the mean is given by:

E(X) = 4 x 0.4 + 3 x 0.32 + 2 x 0.17 + 1 x 0.08 + 0 x 0.03 = 2.98.

More can be learned about the mean of a discrete distribution at brainly.com/question/27899440

#SPJ1

5 0

2 years ago

Some more math stuff I don't know of :(

Nutka1998 [239]

They are both 40°. This is bc 180-65-75=40

6 0

3 years ago

Read 2 more answers

When you answer on a lot of posts anf now your phone is having a notification rave-

mamaluj [8]

Haha! I know how that feels

3 0

3 years ago

Melissa has $100 in the bank. She plans to deposit $40 per week until she reaches $500. What is the rate of change? Explain what

Wewaii [24]

Answer:

$40 per week

Step-by-step explanation:

Step one:

Given data

the initial amount is = $100

the total amount= $500

let the number of weeks be x

Step two:

The expression for the scenario is

$500= 100+40x-------1$

From the expression above, the rate of the change is $40 per week.

this means that in every week the account will be increased by $40

5 0

3 years ago

Please I don’t undersatnd what I have to do for the second question. This is a GCF (greatest common factor) problem.

andreev551 [17]

Answer: You need to find the multiples of each of the numbers and choose the largest one that each number has

Step-by-step explanation:

42 write what can be multiplied to get 42

1 and 42 , 2 and 21, 3 and 14, 6 and 7

70 write what can be multiplied to get 70

1 and 70, 2 and 35, 5 and 14, 7 and 10

56- write what can be multiplied to get 56

1 and 56, 2 and 28, 4 and 14, 7 and 8

Now look back and see what numbers they all have in common, which is 2 and 14 in this case

You pick the bigger number because it is a GCF problem, which is 14, and that is the number of rows

8 0

3 years ago