8.5x + 9x = y
That is because you don't know how many hours they worked, so you can't how much money they made.
If you plugged in 4 hours for the x's you'll do something like this:
8.5 (4) + 9 (4) = y
34 + 36 = y
70 = y
That is how you would do it if you have the number of hours they worked.
Answer:
x=-1
Step-by-step explanation:
The axis is the highest or lowest point on a parabola.
I'm adding my answer again cuz it was taken down.
Point B is in quadrant || and point D is in quadrant |V
Well, since the exam creator claims that on the same exam, nine times out of ten, seniors will have an average score within 6% of 80%, that means there is a 90% confidence interval. 9 / 10 = .90 = 90% 90% = 1.645 1.645 * .9 = 1.4805 Margin of Error - 1.4805and The margin of error is the distance from x-bar, the center of the confidence interval ,to the end of the interval. This distance is 6% of 80% which is given by: 80×6100=4.8 Therefore the margin of error is 4.8% and the confidence interval is: ({80 - 4.8}%, {80 + 4.8}%)
Answer:
there is 81 student and 317 adults adults :) got u
Step-by-step explanation:
4452 = 8n + (4n-7)12
4452 = 8n + 48n - 84
4536 = 56n
81 = n
