In this item, we are already given that the length of the rectangular book can be represented by the variable x. In this way, the width, which was described to be the difference of the length and 3 inches, can be expressed as x - 3.
The area of the triangle is rectangle is calculated by multiplying the length, x, and the width, which was derived to be x - 3.
Area = Length x width
Area = (x)( x - 3)
Putting in the value of the area, we have the final answer as,
x(x - 3) = 63.8 in²
Hence, the final answer is the first answer.
Answer:
Step-by-step explanation:
Given
Required
Solve by elimination
To do this, we subtract both equations (to eliminate x)
-
--------------------
Substitute in
Solve for 3x
Solve for x
Answer:
A 2 miles per hour
Step-by-step explanation:
The equation would be L = 1d + 45
After 21 days it would be
L = 1(21) +45
L = 21 + 45
L = 66 miles after 21 days
Answer:
-13, 0.4,7 its the 4th one
Step-by-step explanation:
