Answer:
yes
Step-by-step explanation:
yes
Answer:
x=2
Step-by-step explanation:
6+8x=6x+10
6+2x=10 Subtract 6 from both sides
2x=4 subtract 6 from both sides
x=2 divide by 2 on both sides
Hope this helps plz mark brainliest :D
r = correlation coefficient
If: Sxx = 10, Syy = 40, Sxy = 10, then:
Answer:
(3, 1)
Step-by-step explanation:
plotting these points on a graph, while (3, 1) may look like it's on the line, it is the only point that would involve changing the slope of the line, so that point cannot be on the line.
Answer:
- boat speed: 17.25 mph
- current: 2.5 mph
Step-by-step explanation:
Upstream, the speed of the current (c) subtracts from the speed of the boat (b) to give the net speed. Downstream, the speed of the current adds. We can make use of the relation ...
speed = distance/time
b-c = 29.5/2 = 14.75 . . . . . miles/hour
b+c = 59.25/3 = 19.75 . . . .miles/hour
Subtracting the first equation from the second, we get ...
(b+c) -(b-c) = 19.75 -14.75
2c = 5
c = 2.5
Then either equation can be used to find b:
b = 14.75 +c = 17.25
The speed of the boat in still water is 17.25 miles per hour; the speed of the current is 2.5 miles per hour.
