You would divide 10.45 by .55 and you would get 19 so 19 is your answer hope this helps
Ignoring the "?" in your question:

If the "?" is a squared symbol that wasn't caught:

Use the quadratic formula

to get the solutions:

as you can see, the discriminant is negative, so the equation has no solution.
Answer:
4π
Step-by-step explanation:
-A circle subtends a total angle of 360 ° from its center.
-The length of an arc is directly proportional to the angle it subtends from the circle's center.
#The arc's length can therefore be calculated as:

Hence, the length of the arc is 4π
7 goes into 11 one time, which leaves you with 1 4/7.
Answer:
15
Step-by-step explanation:
(400-250) divided by 9.5