Answer:
The solutions are
and 
Step-by-step explanation:
we have

Group terms that contain the same variable, and move the constant to the opposite side of the equation

Factor the leading coefficient

Complete the square. Remember to balance the equation by adding the same constants to each side.


Rewrite as perfect squares


square root both sides





Any decimal under 1, i believe.
Answer:
5
Step-by-step explanation:
There are 9 friends with 4 or 5 pets so, you subtract 9-4 because there are 4 friends with 2 or 3 = 5 because the question is asking how many more.
Answer:
K = 3
T = 2
And
H = 12
Step-by-step explanation:
3k = 9
k = 9/3
k = 3.
3k =k + 3t
subtitute value of k
3×3=3+3t
9-3=3t
6/3=t
t=2.
2k + h =18
2×3+h=18
h=18-6
h=12...
4.2 because it has a box around the corner that makes it whole