Answer:
40
Step-by-step explanation:
11x+13=90
11x=77
x=7
49-9=40
I dont have the * exact answer * but i got 11 or 12. Hope this helps :))
Answer:
a.The ratio of the heights is the square roots of the both of them √64 and √144
which is 8 and 12
b.To find the height of the larger prism you use the ratio of the heights,in a ratio and proportion
8 - 49
12-x
8x/8=588/8
x=73.5
I hope this helps
Answer: The answer is (c) 
Step-by-step explanation: Given that there are two functions f and g, defined by

We are to find f*g and also its domain.

Also, its domain will be all real numbers, since the function f*g is defined at all 'x' in real numbers.
Thus, the correct option is

(-x-1)(x-1)(x^2+6)
distribute from there i think?
math papa website can help with this... im not that good at math