9514 1404 393
Answer:
Step-by-step explanation:
For l laps around a 1/4 mile track, the total distance is ...
l×(1/4)
After adding 2 1/2 miles to that, Gabriella's total distance was 4 miles:
l×(1/4) +(2 1/2) = 4 . . . . an equation to find l
__
We can solve this equation by subtracting 2 1/2, then multiplying by 4.
l×(1/4) = 1 1/2
l = 4(1 1/2)
l = 6
Gabriella ran 6 laps on the track.
D)10cm
10×10=100
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8($14.90)=8($15.00-$0.10)
d)
Answer:
x ≤8/5
Step-by-step explanation:
6x - 9 ≥ 11x - 17
Subtract 6x from each side
6x -6x-9 ≥ 11x - 17-6x
-9 ≥ 5x- 17
Add 17 to each side
-9+17≥ 5x - 17+17
8≥ 5x
Divide each side by 5
8/5≥ 5x /5
8/5≥ x
Answer:
Therefore the probability that a person with lung cancer is a smoker is
= 0.58
Step-by-step explanation:
Given, 11% of population smokes. Then(100-11)%=89% of population do not smoke. The probability of getting lung cancer if a person smoker is 0.34. The probability that a nonsmoker will get lung cancer is 0.03.
Cancer
Smoker (11%× 0.34)=3.74%
nonsmoker (89%×0.03)=2.67%
______
6.41%
Therefore the probability that a person with lung cancer is a smoker is
= 0.58
Solve for t by simplifying both sides of the equation, then isolating the variable.
t = -0.12