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Vlada [557]
3 years ago
14

A librarian recorded the number of books that were checked out on each of the last 9 days,as shown below. 142, 136, 125, 148, 15

0, 152, 115, 131, 136 What is the mean of the data set? a 137.22 b 1, 235 c None of these d 9
Mathematics
2 answers:
nika2105 [10]3 years ago
8 0
The answer is A. 137.22
lutik1710 [3]3 years ago
4 0

Mean is the sum of values divided by the count of values.

The sum of values is 1,235.

There are 9 values.

1235/9 = 137.22

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Corey invested $800 in a CD at a simple interest rate. After 24 months, his account was worth $1000.
Vladimir [108]

Answer:

made 25%

Step-by-step explanation:

5 0
3 years ago
If I have 10 dollars and I win 6 out of 10 and lose 4 out of 10 and bet 1$ each trade, how much should there be left after 10 tr
ololo11 [35]

you will be left with 12 dollars.

<u> </u><u>Step-by-step explanation: </u>

Given:

The actual money you have = 10 dollars.

The bet amount for each trade= 1$

For each win, you get extra +1 dollar.

Step 1:

So, you won 6 trades= (6*1)= 6$

Step 2:

For each lose, you loss -1 dollar.

Step 3:

So, you lose 4 trades= (4)*(-1)= -4$

Step 4:

After 10 trades, the money you earned is= 6$ -4$= 2 dollars.

Finally, the total money left after 10 trades is= actual money + earned money                                                

= $10 + $2= 12 dollars.

7 0
3 years ago
Giving brainliest!!!!!
sweet [91]

Answer: It’s C, “x+12=30; x=18 students”

Step-by-step explanation:

If Mr. Wilson has 12 more students than Mr. Star, whatever Mr. Star has (x) plus 12, should equal 30. That would make x, or the amount of students Mr. Star has, 18. This answer is included in option C.

4 0
3 years ago
Use Lagrange multipliers to solve the following exercise. A home improvement contractor is painting the walls and ceiling of a r
mash [69]

Answer:

Let the width of the garden =x meter

Then length=(x+4) meter

Half perimeter =36 m

So perimeter of garden =(2×36)=72 meters

According to the question

⇒2(l+b)=72

⇒2(x+x+4)=72

⇒2x+2x+4=74⇒4x=64⇒x=16 meters

Hence,the width of the garden =16 meters

The length of the garden =(16+4)=20 meters

5 0
3 years ago
What are the features of the quadratic function f(x) = x^2 + 10x + 21?
defon

A is the correct answer buddy.

_________________________________

good luck.♥️♥️♥️♥️♥️

3 0
4 years ago
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