speed with no wind = s
speed with wind = s + 5
speed against wind = s - 5
time = t
speed = distance/time
distance = speed * time
With wind, time = t, speed = s + 5, distance = 50
50 = (s + 5)t
Against wind, time = t, speed = s - 5, distance = 30
30 = (s - 5)t
t = 30/(s - 5)
50 = (s + 5) * 30/(s - 5)
50(s - 5) = (s + 5) * 30
50s - 250 = 30s + 150
20s = 400
s = 20
Answer: 20 mph
3. if there were less than 3 acute angles, the triangle would be either obtuse or right.
Answer:
D
Step-by-step explanation:
30 times 14 times 18 divided by 3 sides =2520cm^2
Hopes this helps Fellow user :D
Answer:
C
Step-by-step explanation:
The surface area (A) of a sphere is calculated as
A = 4πr² ← r is the radius, here r = 12, hence
A = 4π × 12²
= 4π × 144 = 576π units² → C
Answer:
Around 226.2
Step-by-step explanation:
if diamater = 12
radius = 6
6^2 = 36
and 36 times π = around113.1
113.1 times 2 = 226.2
its not exactly 226.2
