Answer:
C: 583
Step-by-step explanation:
5(100)+8(10)+3(1)
500+80+3= 583
Hope this helps! :)
Answer:
b=i*
or -i*
Step-by-step explanation:
11b^2-9=-68
11b^2=-59
b^2=-59/11
b=i* or -i*
"i" in this case is an imaginary number, equal to 
if you haven't learned about these yet, something is wrong with the question
To add them, you first need a common denominator.
So multiply <span> 1/4 by 5/5 and 1/5 by 4/4 first.
Now they'll be 5/20 and 4/20.
Add them to get 9/20. </span>
Answer:
30
Step-by-step explanation:
As 1 percent is equal to 1/100
1/100 of 3000 (1/100 x 3000)
equals to...
30
Answer:
The speed in still water is 5 miles per hour.
Step-by-step explanation:
distance with current = 90 miles
distance against current = 10 miles
speed in still water = s
speed of current = 4 mph
speed with current = s + 4
speed against current = s - 4
time = t
speed = distance/time
distance = speed * time
With current:
90 = (s + 4) * t
Against the current:
10 = (s - 4) * t
We have a system of equations:
90 = (s + 4) * t
10 = (s - 4) * t
90 = ts + 4t
10 = ts - 4t
Subtract the second equation from the first equation.
80 = 8t
10 = t
t = 10
10 = t(s - 4)
10 = 10(s - 4)
1 = s - 4
s = 5
Answer: The speed in still water is 5 miles per hour.
