∠s + ∠y are complementary
∴ ∠s + ∠y = 90°
∠s = 4(∠y ) -100
s + y = 90
4y - 100 + y = 90
5y = 90 + 100
5y = 190
y = 38
Ans: y = 38°
A is the correct answer. next one
Answer:
0.9606 = 96.06% probability that the system will function tomorrow
Step-by-step explanation:
For each component, there are only two possible outcomes. Either it works, or it does not. Components are independent. This means that we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
Probability of a component working:
0.7 of 0.2(rain)
0.9 of 1 - 0.2 = 0.8(no rain). So

0.86 - 86% probability that the system will function tomorrow
6 components:
This means that 
What is the probability that the system will function tomorrow
This is

In which





0.9606 = 96.06% probability that the system will function tomorrow
Answer:
3.75 degrees if you need to divide, addition then it is 95 degrees, subtraction 55 degrees, and if it's multiplication 1500 degrees
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