Option 2.
shows the correct way to use the quadratic formula to solve the given equation.
Step-by-step explanation:
Step 1:
For an equation of the form
the solution is
.
Here a is the coefficient of
, b is the coefficient of x and c is the constant term.
can also be written as 
Comparing
with
, we get that a is 1, b is -4 and c is -21.
To get the solution, we substitute the values of a, b, and c in
.
Step 2:
Substituting the values, we get


This is option 2.
Step-by-step explanation:
Explain how the author supports the argument that banning plastic bags in favor of paper ones is not a good solution to the problem of waste.
Use details from the article to support your response
Answer:
Step-by-step explanation:
A
9514 1404 393
Answer:
x = 7
Step-by-step explanation:
The sum of angle measures in a quadrilateral is 360°.
(8x-5)° +107° +83° +119° = 360°
8x = 56 . . . . . . . divide by °, subtract 304
x = 7 . . . . . . . . . . divide by 8