Answer:
w = -10,6
Step-by-step explanation:
w(4+w)=60
4w + w^2 -60 = 0
w^2 +4w -60 = 0
w^2 +10w -6w -60 = 0
w(w+10) -6(w+10) = 0
w = -10, 6
Answer:
Step-by-step explanation:
Maria can paddle her canoe 2 miles upstream against the current in the same time it would take her to paddle 6 miles downstream.
Maria can paddle 2mph in still water.
What is the speed of the current?
:
let c = the rate of the current
then
(2-c) = effective speed upstream
and
(2+c) = effective speed downstream
:
Write a time equation; time = dist/speed
Two mi upstr time = six mi downstr time
2%2F%28%282-c%29%29 = 6%2F%28%282%2Bc%29%29
Cross multiply
2(2+c) = 6(2-c)
4 + 2c = 12 - 6c
2c + 6c = 12 - 4
8c = 8
c = 1 mph is the current
:
:
Check this, find the time each way,
effective speed down: 2 + 1 = 3 mph
effective speed up: 2 - 1 = 1 mph
6/3 = 2 hr
2/1 = 2 hrs
Answer:
The answer is 6.5
Step-by-step explanation:
All you have to do is divide 13 by 2.
Answer:
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Answer:
Step-by-step explanation:
<u>Given </u><u>:</u><u>-</u><u> </u>
- A linear inequality 4m +6<2
We need to find the solution set for the given inequality . So , on solving it , we have ,
4m + 6 < 2
4m < 2 - 6
4m < -4
m < -4/4
m < -1
Hence m can have all values less than -1. Therefore the final answer is ,
<u>Hence </u><u>m </u><u>can </u><u>have </u><u>all </u><u>values </u><u>less </u><u>than</u><u>-</u><u>1</u><u>.</u>