Answer:
chance of winning $100 = 1/1000
chance of winning $50 = 5/1000 = 1/200
cost of ticket = -1
E[x] = 100* 1/1000 + 50* 1/200 -1
= 0.1 + 0.25 - 1 = -0.65
Step-by-step explanation:
hope this helps
Answer:
10 <3
Step-by-step explanation:
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▹ Answer
<em>Median = 19.5</em>
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▹ Step-by-Step Explanation
13, 14, 17, 18, 21, 23, 26, 28
Middle 2 =
18 + 21 = 39
39 ÷ 2 = 19.5
Median = 19.5
Hope this helps!
- CloutAnswers ❁
Brainliest is greatly appreciated!
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⭐️- Remember that slope formula is y=mx+b
1. Know that the m is (-3)
2. 4=(-3)(9)+b
3. 4=(-27)+b
4. b=31
5. y=(-3x)+31
6. y=3x-31*
*whenever it is finding a perpendicular, you switch the signs; when it is finding a parallel, you leave it alone
Answer:
13 footballs and 13 basketballs
Step-by-step explanation:
Let f = footballs
b = basketballs
f=b since we are buying an equal number
9f+7b = 208
Substitute f=b
9f+7f = 208
16f = 208
Divide by 16
16f/16 = 208/16
f=13
We are buying 13 footballs
Since f=b
We are buying 13 basketballs
