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
sorry it won't let me show step by step but your answer is 150x-17
Answer:
12+133
Step-by-step explanation:
Separate this expression into two parts, (6x2) + (-19x-7)
Solve what is in the parenthesis (12) + (133)= 12+133
The simplified expression would also be 145
Answer:
the answer is a^20
Step-by-step explanation:
(a^4)^5
a^4×5
a^20
Lets look at the info we have:-
1 pound of cheese = $6.75
2.6 pounds of cheese
MULTIPLY TO FIND D ANSWER:-
$6.75 × 2.6 = $17.55
2.6 pounds of cheese cost $17.55.
CHECK OUR WORK:-
17.55 ÷ 2.6 = 6.75
we were RIGHT!!
So, 2.6 pounds of cheese costs $17.55.
Hope I helped ya!! xDc
