Answer:
x = - 1, x = 8
Step-by-step explanation:
Given
x² - 7x - 8 = 0 ( add 8 to both sides )
x² - 7x = 8
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- )x +
= 8 +
=
(x - )² =
( take the square root of both sides )
x - = ±
= ±
( add
to both sides )
x = ±
Thus
x = -
=
= - 1
x = +
=
= 8
11011 - 101 = 10110 (putting the zero in front does not matter)
Base two only accommodate 1's and 0's. Base two are called binary.
Check the picture below
Note 10 - 1 in binary equals 1
when we borrow to 1, that zero becomes 10, then 10 minus 1 equals 1.
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Answer:
The dimensions of the pool are:
Width: 8.944 feet
Length: 17.888 feet
Step-by-step explanation:
From Geometry, the area of a rectangle (), measured in square feet, is determined by the following equations:
(1)
Where:
- Width, measured in feet.
- Length, measured in feet.
If we know that ,
and
, then we get the following second order polynomial:
(1)
And we solve the expression for :
Then, the dimensions of the pool are, respectively:
and