4x-8=9y-5 in standard form is 4x-9y=3
Downstream DATA:
distance = 12 miles
time = 2 hours
rate = 12/2 = 6 mph
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Upstream DATA:
distance = 12 miles
time = 4 hrs
rate = 12/4 = 3 mph
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Equations:
Downstream: b + c = 6
Upstream::: b - c = 3
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Add to get:
2b = 9
b = 4.5 mph (speed of the boat in still water.)
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Solve for "c":
b + c = 6
4.5 + c = 6
c = 1.5 mph (speed of the current)
The answer is 1.5 mph
Solution: The needed answer for first blank is 1 and the needed a for second blank is 1.
Explanation:
The given equation is
.
The form of perfect square is
.
The given equation can be written as
.
To make the perfect square we can add or subtract
in the given equation. Where, a is coefficient of
and b is coefficient of x. In the parenthesis the coefficient of
is 1 and coefficient of x is 2.

So, the given equation is written as 

Therefore, the needed answer for first blank is 1 and the needed a for second blank is 1.
Answer:
what i am supposed to answer
Step-by-step explanation: