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alekssr [168]
2 years ago
12

Plz i NEED HELP ABOUT TO FINISH THIS CLASS! PLZ

Mathematics
2 answers:
ArbitrLikvidat [17]2 years ago
8 0

Answer:

last one

Step-by-step explanation:

GrogVix [38]2 years ago
3 0
The last one quick quick
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A department store has average daily sales of $29,876.76. The standard deviation of sales is $1000. On Tuesday, the store sold $
Furkat [3]
This should be the correct answer. i hope this helps you out.

have a nice and wonderful day :)

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3 years ago
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Express cos^2 x in terms of cos2x. Hence, express f(x) = 6cos^2 x - 4sin 2x in the form R cos (2x + Y degrees) + p where R, y an
Lady bird [3.3K]
2cos^2 x = 1 + cos 2x
cos^2 x = 1/2(1 + cos 2x)
f(x) = 6cos^2 x - 4 sin 2x = 6(1/2(1 + cos 2x) - 4 sin 2x = 3 + 3cos 2x - 4sin 2x
8 0
3 years ago
The long-distance calls made by the employees of a company are normally distributed with a mean of 6.3 minutes and a standard de
Sergio [31]

To solve this problem, we use the formula:

z = (x – u) / s

where z is the z score value which can be obtained from the tables, x is the sample value, u is the mean = 6.3 min, and s is the std dev = 2.2 min

 

at P value = 0.90, the z = 1.28, finding for x:

x = z s + u

x = 1.28 * 2.2 + 6.3

x = 9.116

 

at P value = 1.0, the z = 3.49, finding for x:

x = z s + u

x = 3.49 * 2.2 + 6.3

x = 13.978 ~ 14

 

Therefore the longest 10% calls last about 9.1 minutes to 14 minutes

3 0
3 years ago
Find the percent of increase from 80$ to 90$
Ivan

Answer: 12.5%

Step-by-step explanation:

80x 12.5%=10

80+10=90

7 0
2 years ago
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PLEASE HELP! FIRST AND BEST ANSWER WILL BE MARKED BRAINLIST!!<br> second sections
Vika [28.1K]

Answer:

Well, for one thing I can't read the image--it's too small!

But I know these problems well. If I am correct, this is a spinner probability problem.

Your spinner appears to have 5 sectors, all equal in area, therefore making their probability equal.

So each of those has a prob of 1/5 in the scheme of things.

To find the combonational probability below, multiply the prob of each outcome together to find each.

Have a great day, and feel free to comment with questions!

:)

3 0
3 years ago
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