The answer will probably be -0.665
Octagon, stop sign.
Eight isoscles triangles. It looks like we're told the side is 9.9 and the height to the side (also called the apothem) is 12.
So each isosceles triangle has area (1/2)(9.9)(12) and we have eight of them,
area = 8(1/2)(9.9)(12) = 475.2
Answer: 475.2
Usually we wouldn't be told 9.9 -- this is the baby version. We know each of those isoscles triangles has unique angle 360/8=45 degrees, so the apothem and half the side of the octagon are a right triangle with acute angle 22.5 degrees.
The area of the right triangle with long leg 12, short leg x,
tan 22.5 = x/12 or
x = 12 tan 22.5
Twice that is what we're told is 9.9; let's check:
2x = 24 tan 22.5 = 9.941125496954282
The area of the little right triangle is
(1/2) 12 × 12 tan 22.5
and there are 16 of these
16 (1/2) 12 × 12 tan 22.5 ≈ 477.174
Answer:
3/8
Step-by-step explanation:
slope = rise/run = 3/8
Answer:
$814.13
Step-by-step explanation:
Recall that the simple interest formula is a=p(1+rt).
a= final amount (Unknown)
p=starting amount ($780)
r= interest rate (5.25= 0.0525%)
t=time in years (10 months =5/6 years)
Plug numbers into formula:
a=780(1+5.25*5/6)
Solve parenthesis first according to PEMDAS:
a=780(1.04375)
Multiply:
814.125
Round to nearest hundredth (cent):
$814.13
