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Setler [38]
3 years ago
13

A skincare company posts advertisements via social media. The probability model describes the number of times the company may po

st in a day. Posts Made 0 1 2 3 4 5 P(X) 0.05 0.1 0.35 0.25 0.2 0.05 How many posts would you expect the company to post each day? (4 points) 3.4 3.05 2.6 2.45 2.1
Mathematics
2 answers:
scoundrel [369]3 years ago
7 0

Answer:

2.06

Step-by-step explanation:

the answer is the sum of all of the products of posts made by the P(X) under it.

also... I got it right on my quiz

solniwko [45]3 years ago
7 0

Answer:

It's 2.6

Step-by-step explanation:

Someone else put that it's 2.06 but it is actually 2.6

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Find the measure of DC if m
kupik [55]

Answer:

  • B. 132°

Step-by-step explanation:

<u>Find the measure of arc BD</u>

  • m∠A = 1/2(arc BC - arc BD)
  • 2*36° = 150° - arc BD
  • arc BD = 150° - 72° = 78°

<u>Find the measure of arc DC</u>

  • arc BD + arc BC + arc DC = 360°
  • arc DC = 360° - (150° + 78°) = 360° - 228° = 132°

Correct choice is B

7 0
3 years ago
What is the circumference of a circle with an area of 153.86 cm²?<br><br> Use 3.14 for pi.
Vera_Pavlovna [14]
Circumference of circle = 43.96 are = πr'2
4 0
4 years ago
Read 2 more answers
Cody bought two burgers and two
8_murik_8 [283]

Answer:

$5

Step-by-step explanation:

Let the cost of one burger be $b while the cost of one small fries be s

2 burgers and 2 small fries cost $14

This means that;

2b + 2s = 14

divide both sides by 2

b + s = 7 •••••••• (i)

Three burgers and four small fries cost $23

Mathematically;

3b + 4s = 23 •••••••• (ii)

From i , we can see that s = 7- b

we can now substitute this into equation ii

3b + 4(7-b) = 23

3b + 28 -4b = 23

4b -3b = 28 -23

b = $5

one burger costs $5

7 0
4 years ago
Here are the scores that a group of teenagers earned on a driver’s education test.
svet-max [94.6K]
176 and 180 all the other numbers are good
3 0
3 years ago
Which radical expression is in simplified form A. 11y/sqrt3 B. sqrt6/5y C. sqrt17/sqrt4 D. sqrt25/18
Mkey [24]

Answer:  \frac{\sqrt{6}}{5y}

Step-by-step explanation:

The given radical expressions are:

A. \frac{11y}{\sqrt{3}}\\\text{It is not completely simplified ,}\\\text{since denominator is radical, we need to rationalize it first to simplify. }\\\\B.\frac{\sqrt{6}}{5y}\\\text{It is completely simplified ,}\\\text{since its denominator is not radical and 6 is not a perfect square. }\\\\C. \frac{\sqrt{17}}{\sqrt{4}}\\\text{It is not completely simplified ,}\\\text{since denominator is radical, we need to rationalize it first to simplify. }\\\\\\\\D. \frac{\sqrt{25}}{18}=\frac{5}{18}\\\text{Hence, expression D was not completely simplified .}

8 0
3 years ago
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