Answer:
x=7
Step-by-step explanation:
2x=20-6
2x=14
x=14/2
x=7
<span> x = 3y - 8
</span>
Plug this in for variable x in equation [2]<span>
</span><span><span> [2] 3•(3y-8) + 2y = 31
</span><span> [2] 11y = 55
</span></span>
Solve equation [2] for the variable y
<span><span> [2] 11y = 55</span>
<span> [2] y = 5</span> </span>
// By now we know this much :
<span><span> x = 3y-8</span>
<span> y = 5</span></span>
<span>// Use the y value to solve for x
</span>
<span> x = 3(5)-8 = 7 </span>Solution :<span><span> {x,y} = {7,5}</span>
Processing ends successfully</span>
Answer:
u3
Step-by-step explanation:
Answer:
7.67
Step-by-step explanation:
Given the data :
Week_sales_Forecast ___|error|_ |error|²
1 _____15
2 ____ 16
3 ____ 19
4 ____ 18
5 ____ 19 ____ 17 _______ 2____4
6 ____ 20 ___ 18 ________2____4
7 ____ 19 ____19 ________0____0
8 ___ 22 ____ 19 ________3____9
9 ___ 15 ____ 20 ________5___ 25
10 __ 21 _____19 ________ 2 ___ 4
Mean squared error :
(4 + 4 + 0 + 9 + 25 + 4) / 6
= 46 / 6
= 7.666
= 7.67
A binomial probability density function should be used to represent the probability
<h3>How to determine the type of
probability density?</h3>
The given parameters are:
- Proportion that plays sport, p = 32%
- Number of students selected, p = 50
- The probability, P = (x ≤ 15)
The proportion that plays sport indicates that
68% of the students do not play sport
So, we have two events, which are
- Play sport
- Do not play sport
When there are two possible events, then the binomial probability density function should be used
Read more about binomial probability density at:
brainly.com/question/15246027
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