B .......................
I believe it is 4 hope this helps!
The answer is F= 3/2 because there are two sandwiches cut in half, there are three children and each one ate one half, one half was left over, the number three represents the halves that were eaten and number two represents the amount of sandwiches.
To answer the first problem, we determine first the equivalent z score and get the corresponding probability. The z score at 3 hours is (3-3.4)/0.5 = 0.8 while that of 4 hrs is <span>(4-3.4)/0.5 = 1.2. z score of 0.8 is equal to a probability of 0.2119 and that at 1.2 is 0.8849. The difference is 0.673. Hence answer is C.
For problem 2, the z score at 99% is 2.33 hence, the equation becomes 2.33 = (x-30)/6 where x is the noise level threshold. Answer is D. 43.96 decibels.</span>
Answer/Step-by-step explanation:
Recall the acronym for trigonometric ratios: SOHCAHTOA
SOH means sine of the reference angle = opp/hypotenuse
CAH means cosine of the reference angle = Adj/hyp
TOA means tangent of the reference angle = opp/adj
a. Reference angle = A
opp = 15
hypotenuse = 17
Therefore:
b. Reference angle = A
Adj = 8
hypotenuse = 17
Therefore:
c. Reference angle = A
Adj = 8
Opp = 15
Therefore:
d. Reference angle = B
Opp = 8
hypotenuse = 17
Therefore:
e. Reference angle = B
Adj = 15
hypotenuse = 17
Therefore:
d. Reference angle = B
Opp = 8
Adj = 15
Therefore: