Answer:
7y+12x=-16
y-step explanation:
Multiply everything by 7 to get rid of the fractions.
Distribute the 12 into (x-1)
Then subtract 28 from the 12
Finally add the 12x over
Answer:
95%
Step-by-step explanation:
Margin of error is the standard error times critical value.
ME = SE × CV
The standard error for a sample mean is:
SE = σ / √n
SE = 25 / √100
SE = 2.5
If the margin of error is ±5, then the critical value is:
5 = 2.5 CV
CV = 2
Since the sample size is greater than 30, we can approximate the confidence level using normal distribution. The percent between -2 and 2 standard deviations is 95%.
Therefore, there is a 95% probability the sample mean is within ±5 of the population mean.
Answer:
No, it will take Lin 82.25 min to finish her book
40 pages take 70 min which is over an hour so she can finish in a hour. She needs an additional 22.25 mins
Step-by-step explanation:
For the scatter plot on homework:
a) The relationship is that the test score will increase, if the time spent on homework increases.
b) The function is y=8x+40, and what we need to see is what the score will be if someone puts in 3 hours of homework, x=3 in this because it means the time spent on homework:
y=8(3)+40
y=24+40
y=64
c) The score would be 40% if no time was spent doing homework.
For the scatter plot on the rides:
a) y = -7/5x + 17.8
b) Anika worked 17.8 hours on Day 0
c) Decreased by 7/5 in a day.
Hope this helps, have a BLESSED AND WONDERFUL DAY! As well as a great Superbowl Weekend! :-)
- Cutiepatutie ☺❀❤
Answer:
eight point nineteen
Step-by-step explanation: