Borachio eats at the same fast food restaurant every day. Suppose the time X between the moment Borachio enters the
restaurant and the moment he is served his food is normally
distributed with mean 4.2 minutes and standard deviation 1.3
minutes.
1. Find the probability that when he enters the restaurant today
it will be at least 5 minutes until he is served.
0.2962
2. Find the probability that average time until he is served in
eight randomly selected visits to the restaurant will be at
least 5 minutes. 0.0409

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step-by-step explanation:

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)

answer: 0

step-by-step explanation: the positive, like 5, + its opposite, like -5 would be 0

5+(-5)=0, or 5-5=0

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.