hrcatena
02.10.2019 •
Mathematics
The length of a rectangle is 5 inches more than its width, x. the area of a rectangle can be represented by the equation x 2 + 5x = 300. what are the measures of the width and the length? width = a0 inches length = a1 inches next question
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Ответ:
Step-by-step explanation:
Let
x-----> the width of the rectangle
y----> the length of the rectangle
we know that
the area of the rectangle is equal to
substitute equation B in equation A
so
the area of the rectangle is equal to
Solve the quadratic equation
we know that
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
so
substitute in the formula
the solution is
Find the value of y
Ответ:
Step-by-step explanation:
Given the expression:
We can re-write the answer as:
The answer is irrational because the sum of a rational number and irrational number is an irrational number.
The correct option is B.