Answer: The speed of rowing is 3.56 miles per hour and speed of current is 1.06 miles per hour.
Step-by-step explanation:
Since we have given that
Let the speed of boat in still water be 'x'.
Let the speed of current be 'y'.
Distance = 1 mile
For Upstream, speed would be

For downstream, speed would be

By graphing method we get that
x = 3.558 miles/hr
and y = 1.058 miles/hr
Hence, the speed of rowing is 3.56 miles per hour and speed of current is 1.06 miles per hour.
Answer:
(-1.5, 0.5)
Step-by-step explanation:
x = -1.5
y = 0.5
(-1.5, 0.5)
Answer:
46 years 1 month
Step-by-step explanation:
Let us assume the investment is a simple interest investment
The simple interest formula is
A= P(1+rt)
Given
Principal p= $1400
Rate r= 7.75%= 7. 75/100= 0.0775
Final amount A = $6400
Time t=?
To find the time t let us substitute our values in the simple interest formula
6400= 1400(1+0.0775t)
6400= 1400+108.5t
6400-1400=108.5t
5000= 108.5t
t=5000/108.5= 46.08
t= 46.1 years
It will take approximately 46 years 1 month to get the amount
Answer: Option 'D' is correct.
Step-by-step explanation:
Real gross domestic product is measure of inflation which reflects the value of goods and services produced in an economy in a particular year. It is basically known as base year prices.
As it is measured on base year prices.
It is also known as inflation corrected GDP.
Hence, Option 'D' is correct.
Answer:
8 km per hour or 8 km/hr
Step-by-step explanation:
If riding 4 km took her 1/2 an hour then you multiply by 2 to get 8 km for 1 hr. 8 km for 1 hour means she was going 8 km per hour.