Answer:
A. ¼
Step-by-step explanation:
Rate of change (m) = 
Using two points on the line, (4, 1) and (-4, -1), find the rate of change using the formula stated above:
Where,
Plug in the values
Rate of change (m) = 
= 
= 
Rate of change = ¼
Answer:
1.1 mph
Step-by-step explanation:
Step one:
John swims a distance of 5/12 miles
time taken = 3/8 of an hour
Required
The speed with which John swims
Step two:
speed= distance/time
substituting we have
speed= 5/12/3/8
multiply the numerator by the inverse of the denominator
speed= 5/12*8/3
speed= 40/36
speed= 1.1 mph
Ooof u change yo pd ussa cf?
I don’t know i never seen this math problem before
Answer:
10 kph
Step-by-step explanation:
Find the speed of the current of the river.
20/(20 - c) + 180/(20 + c) = 8
20(20 + c) + 180(20 - c) = 8(400 - c^2)
8c^2 - 160c + 800 = 0
8(c^2 - 20c + 100) = 0
8(c - 10)^2 = 0
c = 10
The speed of the current of the river is 10 km/hour.
