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marissa [1.9K]
2 years ago
11

Mean, standard deviation and variance of 7,12,15,10,16

Mathematics
1 answer:
Lyrx [107]2 years ago
4 0
Mean =12
Standard devation= 3.2863
variance???
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There are two boxes containing only black and orange pens.
cestrela7 [59]

Answer:

Event 3 -> Event 1 -> Event 4 -> Event 2

Step-by-step explanation:

The probability of choosing a certain pen is the number of that pen in the box over the total number of pens in the box.

So we have that:

Event 1: We have 4 black pen and 20 total pens, so P = 4 / 20 = 1 / 5

Event 2: All pens are black or orange so the probability is 1.

Event 3: We don't have white pens, so the probability is 0.

Event 4: We have 2 black pen and 5 total pens, so P = 2 / 5

Listing from least likely to most likely, we have:

Event 3 -> Event 1 -> Event 4 -> Event 2

3 0
3 years ago
The cost of renting a kayak for one hour is $23. Each additional hour is $8 more. Write the formulas to represent the situation.
sergiy2304 [10]

Answer:

Step-by-step explanation:

Add and then multiply the one left

6 0
3 years ago
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Use the line of best fit to predict the percentage sales increase when the
agasfer [191]

Answer:

107%

Step-by-step explanation:

because if we look at the x-axis, Discount (%)

and look at 35 which is between 30 and 40

and start going up we get near 100

so

107%

or?

we use the two points and with that we find the slope first

\frac{y2-y1}{x2-x1}

plug in (20,62) and (10,32)

\frac{32-62}{10-20}

equals

\frac{-30}{-10}

simplify to 3

then we use

y - y1 = m (x - x1)

y - 62 = 3 (x - 20)

y - 62 = 3x - 60

add 60 from both sides

y - 2  = 3x

add 2 to both sides

y=3x+2

then plug in 35

y= 3(35) + 2

which is

107

6 0
2 years ago
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Select the equation that contains the point (-5, 2) and in which the slope equals 1/2
Vaselesa [24]

5x+3y=4 is the answer....

3 0
2 years ago
5/7 x 21/25 what is the answer to this???!!?!?!!!?
lbvjy [14]
Multiply the tops and multiply the bottoms
Aka
5*21
-------
7*25

And simplify
5 0
2 years ago
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