Answer:
With river 12 miles per hour
Against river 9 miles per hour
wv = water velocity vsw = boat velocity in still water
vsw +wv = 12 mph
vsw -wv = 9 mph
2 * vsw = 21 mph
boat velocity in still water = 10.5
Since vsw + wv = 12 then
water velocity = 1.5 mph
Step-by-step explanation:
72+ 25 is another way to write 72-(-25)
False.
The radius is a line that connects any point on the circle to center. Radius is a constant size line and not line that changes its size therefore it cannot connect any point on circle to any point inside of that circle.
Answer:
A
Step-by-step explanation:
22 successes out of a group of 40 means 22/40 were good. Now, simplify 22/40. Both can be divided by 2.
22/2 = 11
40/2 = 20
Now you have 11/20. Put this in decimal form and you have 0.55
Answer:
The area increased by a factor of 4
Step-by-step explanation:
If the scale factor is 4 and only the height changes
A = 1/2 bh
A = 1/2 b(4h)
A = 1/2 bh(4)
A = A4
The new area is the old area increased by 4