Step-by-step explanation:
x = downstream speed in mph
4 hours × (x-10) + 3 hours × x = 58 miles
4x - 40 + 3x = 58
7x = 98
x = 14 mph downstream speed
and as extra :
therefore his upstream speed was 14 - 10 = 4 mph
I think The answer would be A
First we find list the data in order
Then we find the median
We split the data in half and find the median of the first half which is C
Exact form: -8/3
Mixed number: -2 2/3
Decimal: -2.6 (repeating sign over 6)
The segments AE, EC, AD and DB are in proportion.
Therefore we have the equation:
AE = 4ft, AD = 8ft and BD = 2ft. Substitute:
<em>multiply both sides by 2</em>