Answer:
A=4.
Step-by-step explanation:
Note: In the expression of area the first term should be
.
It is given that area of a rectangular floor of your house is
and the length is
units.
We know that, area of a rectangle is
Since length of the rectangle is
, therefore
is a factor of
and the value of
is 0 at x=-2.
Divide both sides by 4.
Therefore, the value of A is 4.
You forgot to put the picture I’m sorry
A mountaineer climbed 1000 feet at a rate of x feet/hour
1000 = x ( t 1 ) eq1
5000 = X ( t 2) eq2 ( he climbed additional at different rate )
the rate was 10 feet / hour less than twice the first rate
X = 2x - 10 eq3
take eq1 and eq 2
( total time = t 1 + t 2 = T)
T = 1000/x + 5000/X
but X = 2x-10
T = 1000/x + 5000/( 2x -10)
T = 1000/x + 5000/( 2(x-5))
T = 1000/x + 2500 / (x-5)
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Answer:
In step 3
Step-by-step explanation: