Answer:
S = 3.92π
Step-by-step explanation:
The formula for area of a sector is
S = (Ф/360°)πr² where Ф is the angle of the sector in degrees, and r is the radius.
The radius is half of the diameter, so we have 5 = 5.6/2 = 2.8, and Ф = 180°
The area is
S = (180°/360°)π(2.8)²
S = (1/2)π(7.84)
S = 3.92π
(-9/8)x - 7 = -25
(-9/8)x - 7 + 7 = -25 + 7
(-9/8)x = -18
((-9/8)x)/(-9/8) = -18/(-9/8)
x = 18 × (8/9)
x = 16
Answer:
60 math problems.
Step-by-step explanation:
30/2.5=12
12*5=60
Answer:
ab = 49
abc=253
bac=156
acb=311
Step-by-step explanation:
Answer:
She made 15 trials
Step-by-step explanation:
Well it said that she opened the book 15 times in total and records each time so the answer would be 15.