Jenny is 6b years old. her brother is half her age and her sister is 4 years older than jenny. what is the average age of the three siblings in terms of b?

5b + 4/3

Step-by-step explanation:

So if Jenny is 6b and her brother is half that he must be 3b. If her sister is four years older than her then she must be 6b + 4. To find the mean (or average) you add all the numbers and then divide by how ever many things you added together, so you would do:

Average = (6b+3b+6b+4) ÷ 3

= (15b+4) ÷ 3

= 5b + 4/3

correct answer is infinitely many solutions

step-by-step explanation:

2(2x + 3) = -4 + 2(2x + 5)

solving the above equation:

4x + 6 = -4 +4x +10

combining like terms

4x -4x = -4+10-6

0=0

since both sides are 0=0, we end up into true statement it means it has infinite many solutions.

so correct answer is infinitely many solutions

-60.75

step-by-step explanation:

just add the numbers then put the negative sign on it