3 years ago

Please explain me I can’t understand

Mathematics

1 answer:

valina [46]3 years ago

3 0

Step-by-step explanation:

They are asking, like units are in the sum

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Justin did push-ups for the past 555 days.The following data points are the number of push-ups he did each day.

Vitek1552 [10]

Answer: σ: 2.76

Step-by-step explanation:

Count, N: 5

Sum, Σx: 125

Mean, μ: 25

Variance, σ2: 7.6

Steps

look at attached pic for formula

σ^2 = $\frac{Σ(xi - μ)^{2} }{N}$

$\frac{(21 - 25)2 + ... + (29 - 25)2}{5}$

⇒ $\frac{38}{5}$

⇒ 7.6

σ = $\sqrt{7.6}$

⇒ 2.756809750418

⇒ or 2.76

3 0

2 years ago

Can someone plz help me? <3

OverLord2011 [107]

Answer:

C - 52

Step-by-step explanation:

z = 12 x = 2

(You do indices first!)

2 x 2 x 2 = 8

8 x 5 = 40

12 + 40 = 52

I hope this helps, have a good day! :D

5 0

3 years ago

Help Me Pls I Will Give Brainliest

mylen [45]

Answer:

Hi!

My name is Euijin :D and the answer is:

600$

Step-by-step explanation:

I Divided 12 and 0.02 and got 600

5 0

3 years ago

Larry earns $11.25/hour selling televisions. He also earns 4.5% commission on his sales. What is his

monitta

Answer:

C) $573.75

Step-by-step explanation:

We can come up with the equation of this Gross Weekly pay as:

$P(t)=11.25t+0.045S$

Where P is the amount Larry will get paid, t is the time worked and S is the amount of sales he generated that week. This was derived from the fact that 11.25 is the slope and 0.045S is the y-intercept. By plugging in those values we have:

$P(35)=11.25(35)+0.045(4000)=573.75$

C) $573.75

4 0

3 years ago

Please help guys!! This is kind of hard

murzikaleks [220]

$48
Here's how I found it ( just in case )

4 0

4 years ago