200/5 = 40 mph 200/4 = 50 mph Let x be the speed in still waters and y the speed of current. x + y = 50 x - y = 40 ADD 2x = 90 x = 45 mph ANSWER is C) 2) C
Answer:
Step-by-step explanation:
<u>Use the point-slope equation:</u>
- y - y₁ = m(x - x₁), where (x₁, y₁) is the given point
<u>The line is:</u>
- y - (-6) = -5/3(x - 6)
- y + 6 = -5/3x + 10
- y = -5/3x + 4
The sum is 160/(1-r)=1280 where r is the common ratio,
1/(1-r)=1280/160=8
Inverting we get 1-r=1/8, r=7/8.
Answer:
its C or D
Step-by-step explanation:
i think it's both !
