Answer:
D
Step-by-step explanation:
Answer:
Douglas can race the go-karts at least 3 times.
Step-by-step explanation:
Given that:
Worth of game card = $20
Cost of go-kart = $3.50 each time
Amount Douglas wants to left = $7.75
Let,
x be the times Douglas can ride go-kart.
20 - 3.50x ≤ 7.75
-3.50x ≤ 7.75 - 20
-3.50x ≤ -12.25
3.50x ≤ 12.25
Dividing both sides by 3.50
![\frac{3.50x}{3.50}\leq \frac{12.25}{3.50}\\x\leq 3.5](https://tex.z-dn.net/?f=%5Cfrac%7B3.50x%7D%7B3.50%7D%5Cleq%20%5Cfrac%7B12.25%7D%7B3.50%7D%5C%5Cx%5Cleq%203.5)
Hence,
Douglas can race the go-karts at least 3 times.
Answer:
43.5 cm²
Step-by-step explanation:
½ × 12 × 8 × sin(65)
= 43.50277378 cm²
Do you remember how to find the area of a circle ?
Big Fat Hint: The area of a circle is (pi) x (its radius)² .
Can you find the area of the big circle ... the one with radius = 18 m ?
Do that. The whole big circle, just as if there was nothing inside it, and
no shaded region.
I'll wait.
Now, can you find the area of the small circle ... the one with radius = 12 m ?
Do that.
I'll wait.
The area of the shaded region is just
(the area of the big circle) minus (the area of the small circle) !
I got 180 pi or roughly 565.2 m². I could be wrong. You should check it.