Answer:
- adult tickets: $13
- student tickets $7
Step-by-step explanation:
The given equations are ...
4a +5s = 87
2a +2s = 40
We observe that the coefficient of 'a' in the first equation is 2 times that in the second equation. We can multiply the second equation by -2 and add it to the first to eliminate 'a' terms.
(4a +5s) -2(2a +2s) = (87) -2(40)
4a +5s -4a -4s = 87 -80 . . . . . . . . . eliminate parentheses
s = 7 . . . . . . . . . . . . . . . . . .simplify
2a +2(7) = 40 . . . substitute for s in the second equation
2a = 26 . . . . . . subtract 14
a = 13 . . . . . . . divide by 2
Adult tickets cost $13; student tickets cost $7.
2.) line passes through points (-1, -4) and (0, -1)
slope = (y2 - y1)/(x2 - x1) = (-1 - (-4))/(0 - (-1)) = (-1 + 4)/(0 + 1) = 3/1 = 3
4.) line passes through points (0, -3) and (2, 0)
slope = (0 - (-3))/(2 - 0) = (0 + 3)/2 = 3/2
Step-by-step explanation:
didn't you study
you should learn nicely and listen to your teacher
Answer: See Explanation
Step-by-step Explanation: Heather rolls a far umber cube 60times and finds the probabilityof a 4 Landingface ups 1 Heather wants to roll the fair number cube 12 more times, and on the frst nI rolls, a 3 lands face up each time. Which statement best describes the probability of Heather roling a 4 on the 12th roll? The probability of rolling a 4 on the 12th roll is less than The probablity of rolling a 4 on the 12th roll is more than The probablity of rolling a 4 on the 12th roll is equal to The probability of rolling a 4 on the 12th roll is equal to 10.
Answer: D. 5.0 x 104
Explanation: If you move the decimal point over to go behind the 5 you would end up moving it over 4 points