Good evening.
This is a
incomplete quadratic equation, because it does not have the term
bx. Therefore, we can solve this faster with the following strategy:

Add
16 to both sides:

Take the square root:

Therefore:
I believe it is b)
Because you always do rise over the run and if it goes right then it is positive and if it goes left it is negative.
Answer:
the first one
Step-by-step explanation:
the two lines intersect exactly at 5, -3
Answer:
6. 10^3 ten to the third power
7. 10^5 ten to the fifth power
8. not sure
10. 60
19. 20
11-13: not sure
and i can't understand the rest
Step-by-step explanation:
Answer:
30
Step-by-step explanation:
Given:
Brian Height = 6 feet
Brian Shadow Height = 4 foot
Flag Shadow Height = 20 foot
Flag Height = Unknown ??
So we can use cross multiplication
6/4 = x/20
6×20/4 = x
6×20 =120
120÷4 = 30
So x= 30, which is the Flag Height
I wish that I helped you with this.