substitution method
Step-by-step explanation:
- use second equation
- make x subject of the formula
- put it back in the first equation
- solve to find the value of y
- substitute y value in any equation between the two.
- then you get x value
3 laps because the track is 1/8 mile because when she ran 8 laps it is 8/8 which = 1 so the answer is 3 laps
(8 min) x ( day/1,440 min) x (20 /day) x (365 da/yr) x (35 yr) =
(8 x 20 x 365 x 35) / (1,440) days =
(2,044,000) / (1,440) days =
1,419-4/9 days = 3.89 years
Rounded to the nearest year: <em>4 years</em>
At a pack a day for 35years, I would have expected more than
4 years' damage. But I've checked my math and haven't found
the mistake, so I'll let that be my answer.
Answer:
ln 6
Step-by-step explanation:
The sum of logs is the log of the product.
log a + log b = log ab
