Answer:
x=5
Step-by-step explanation:
Speed of the boat = u
speed of the current = v
in downstream,
u - v = 105/5
u - v = 21
in upstream
u + v = 105/7
u + v = 15
add both equations
2u = 36
u = 18
v = -3
so
speed of the boat = 18 km/h
speed of the current = 3 km/h
Incomplete question, but use the following example as an illustration.
Step-by-step explanation:
Say one person had $200 in a savings account last month and now has $225. That's an increase. The problem is to find the percent of increase in money.
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For all of these problems, make equation into slope-intercept form to be able to see what the slope is.
answer to 1.d. is neither
300.84m^2
First, set up the equation
A=27.6•10.9
Next, multiply(use a calculator)
And you get the answer.
^2 means squared.