Which of the following illustrates the truth value of the given statements?

5 • 3 = 15 or 7 + 5 = 20

The isosceles triangle has two sides of equal length, a, that sre longer than the length of the base ,b. the equation 2a+b=15.7 can be used to find the sides length. if one of the longer sides is 6.3 centimeters what is the length of the base

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e. g. 98.765).

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1