The volume of a cubic shaped water tank is 42875 m 3 , then the height of the water tank is ________m
2 answers:
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Answer:
15cm
Step-by-step explanation:
Theorem: All tangents to a circle from the same point are equal.
Sine E, F, G and H are points of Tangency, by the theorem above:
- EB=BF
- FC=GC
The diameter line EC divides the Isosceles Trapezoid into two equal parts.
Therefore:
- EB=10/2=5cm
- GC=20/2=10cm
We then have by the equality above that:
- BF=5cm
- FC=10cm
BC=BF+FC
=5+10
=15cm
Answer:
The 95% confidence interval for the difference between the Route B and Route A commuting times is -3.771808 to 1.771808
Step-by-step explanation:
Here we have the confidence interval is given by the following equation;
= 49 Minutes
σ₁ = 2 Minutes
= 50 Minutes
σ₂ = 4 Minutes
n₁ = n₂ = 10 days
α = 0.05
At 95%, from the z score table , z =
1.959964 ≈ ± 1.96
Plugging in the values Solving we get
Δμ Min = -3.771808 and Δμ Max = 1.771808.