Answer:
Step-by-step explanation:
sin(x°) = 4/5
x° = arcsin(4/5) ≅ 53.1°
Answer:
0.969
Step-by-step explanation:
Given that:
Mean lifetime (m) = 520 hours
Variance = 900
Hence, standard deviation (s) = √900 = 30
Probability that bulb will last for at most 576 hours
X ≤ 576
Obtain the standardized score :
Using the relation :
Zscore = (x - m) / s
Zscore = (576 - 520) / 30
Zscore = 56 / 30
Zscore = 1.867
P(Z ≤ 1.867) : using the z probability calculator ;
P(Z ≤ 1.867) = 0.96905
Hence, P(Z ≤ 1.867) = 0.969
To find the area of a triangle, you need the formula . A= b*h divided by 2
97.2 miles just multiply
5.4
18
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97.2 Remember, if there is a number behind the decimal point make sure to put a decimal point behind it in the answer
