Answer:
(a) x= 0,1,2..........10
(b) p=0.02
(c) standard deviation = 0.44
(d) p=0.18
Step-by-step explanation:
Detailed Explanation of answer is given in attached file.
Answer: correct is B
Step-by-step explanation:
Annex the bar graph that shows which improvement time is less, the new formula being more effective, with an average of 55 minutes and the average of the old formula is 75 minutes, which leads to the conclusion that the new formula is better than the previous one with a time difference of 20 minutes.
It is never true because there is no sum
Answer:
That would be 14 miles ÷ 6 hours which would be 2.3333 or 2 and 1/3
<h3>
Answer: $70</h3>
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Explanation:
- x = number of days that elapsed
- y = bank balance in dollars
His bank balance is represented by the linear equation y = -20x+150.
The slope -20 means the balance goes down by 20 dollars each day. The y intercept 150 is the starting balance.
Plug in x = 4 to find the balance after four days
y = -20x+150
y = -20*4+150
y = -80+150
y = 70
His balance is $70 after four days. The -80 in the third step indicates the balance had gone down by $80.
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Another way to see why the answer is $70 is to write it out like this
day 0 = $150
day 1 = 150-20 = $130
day 2 = 130-20 = $110
day 3 = 110-20 = $90
day 4 = 90-20 = $70
