245= 5*7*7 :) so 5 and 7 are prime factors of 245 :)
ANSWER

EXPLANATION
The diameter meets the tangent to the circle at right angles.
The sum of interior angles of a triangle is 180°.
This implies that

Group the constant terms

We simplify to obtain,

Answer:
19-12=7, so 4-7=-3, so b is equal to 19
Answer:
n >_ 4
Step-by-step explanation:
move 9 to the other side
n >_ 13 - 9
n >_ 4

looking at the picture above... you do have the radius, is just in the truncated part of the picture... so you have "h" and "r", so just plug them in