Answer:
Answer 1:
2,147,616
Answer 2:
5,145,330
Answer 3:
3,758,328
Answer 4:
8,157,958
Step-by-step explanation:
These are all correct i got 10/10.
11. x² - 7x = 0
x(x) - x(7) = 0
x(x - 7) = 0
x = 0 or x - 7 = 0
+ 7 + 7
x = 7
Solution Set: {0, 7}
12. 3x² - 4x = 20x + 27
+ 4x + 4x
3x² = 24x + 27
3x² - 24x - 27 = 0
x = -(-24) ± √((-24)² - 4(3)(-27))
2(3)
x = 24 ± √(576 + 324)
6
x = 24 ± √(900)
6
x = 24 ± 30
6
x = 4 ± 5
x = 4 + 5 or x = 4 - 5
x = 9 or x = -1
Solution Set: {9, -1}
Answer:
Gas left after 5 hours is: 10 gallons
Gas left after t hours is : sorry I don't know
Step-by-step explanation:
Subtract 2 everytime you count an hour
Hope this helps
Well, the first one is 2/40=1/20. The 2nd one is 1/39. You multiply these to get 1/780.
(x-80) = 2*40
x-80 = 80
x=160 degrees
