<7 and <10 are each 84 degrees
The answer is B. Have a nice day
Hey there, we are given quite a lot of information in this problem. First of all, let's make an equation.
y = x - 22
where y = student's age
where x = instructor's age
this equation is correct because x(instructor) - 22 will yield the student's age (y).
If the instructor were 44 years old, the student would be 22 years old.
y = 44 - 22
y = 22
If the instructor were 66 years old, the student would be 44 years old.
y = 66 - 22
y = 44
d ≥ -7 ? (ignore.....................................................................................................................................)
Answer:
BC = 
= 49 unit
Step-by-step explanation:
The given as AC is a line with B as its mid point
AND ,
AC = 8x + 15
AB = 3x + 4
BC = 4x - 1
∵ AC = AB + BC
Or, 8x + 15 = ( 3x + 4 ) + ( 4x - 1)
Or, 8x + 15 = 7x + 3
Or, 8x - 7x = 3 - 15
∴ x = - 12
SO, AC = 8x + 15 = 8 × ( - 12) + 15 = - 81
Or, AC = 
= 81 unit
And ,AB = 3x + 4 = 3 × ( - 12) + 4 = - 32
Or ,AB = 
= 32 unit
Similarly BC = 4x - 1 = 4 × ( - 12) - 1 = - 49
Or, BC = = 49 unit Answer
