The speed with which utility companies can resolve problems is very important. GTC, the Georgetown TelephoneCompany, reports they can resolve customer problems the same day they are reported in 70 percent of the cases. Suppose the 15 cases reported today are representative of all complaints. a) What is the probability 10 of the problems can be resolved today? b) What is the probability 9 or 12 of the problems can be resolved today? c) What is the probability more than 10 of the problems can be resolved today?

a)  

b)  

c)  

Step-by-step explanation:

From the question we are told that:

Probability of Same day resolution

Probability of Another day resolution

Sample size

a)

Generally the equation for Probability 10 of the problems can be resolved today is mathematically given by

Since

b)

Generally the equation for Probability 9 or 12 of the problems can be resolved today is mathematically given by

OR

Therefore Probability 9 or 12 of the problems can be resolved today is

c)Generally the equation for probability more than 10 of the problems can be resolved today is mathematically given by

Where

Therefore

the opening of this porabola is facing up

step-by-step explanation:

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.