The answer should be -4,
7x2=14
2x-9=-18
14+ -18= -4
B is the correct answer. The absolute value of something will always be positive. ALWAYS.
$40=T >?=m
T= $40,$80,$120,etc.
m=1,2,3,etc
Circumference of a circle = 2πr
Circumference of the whole circle= 2π(30) = 60π
360 - 90 = 270
Length XPY = 270/360 x 60π = 45π
Answer: 45π m