Compute the average (mean) from the data shown. (round to the nearest whole number)

{42 , 30 , 79 , 99 , 72 , 24 , 89 , 91 , 78 , 69}
A) 67
B) 68
C) 69
D) 70

67

Step-by-step explanation:

42+30+79+99+72+24+89+91+78+69=673

673÷10=67.3

You divide by ten because that is how many numbers there are

there would only be 50 odd numbers between 1 and 100 so therefor there would be 50 even so that would only be 50 odd numbers.

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct