Answer:
3.2
Step-by-step explanation:
0 = 2t - 8/5
8/5 = 2t
16/5 = t
3.2 = t
Hayden had the membership for one month and took 6 classes.
Answer:
0.1
Step-by-step explanation:
Solving using empirical rule formula
95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
Hence, the lower bound 95% =
μ - 2σ
Mean = 0.2
Standard deviation of 0.05
= μ - 2σ
= 0.2 - 2(0.05)
= 0.2 - 0.1
= 0.1
The lower bound is 0.1
Given:
- Height of cylinder is 18.2 cm
- Radius of cylinder is 3 cm

To Find?

Solution:
Using formula:
- Surface area of cylinder = 2πr (h + r)

Substituting values in the formula:





- Hence, (B) 399.4 cm² is right answer.