<h2>Steps</h2>
So firstly, we need to isolate the x terms onto one side. To do this, subtract 48 on both sides of the equation:

Next, divide both sides by 2:

Next, we are gonna make the left side of the equation a perfect square. To find the constant of this soon-to-be perfect square, divide the x coefficient by 2 and then square the quotient. Add the result onto both sides of the equation:

Now, factor the left side:

Next, square root both sides of the equation:

Next, add 5 to both sides of the equation:

Lastly, solve the left side twice -- once with the plus sign and once with the minus sign.

<h2>Answer</h2>
<u>In short, x = 6 and 4</u>
Answer: 0.9961
Step-by-step explanation:
Given: Total choices to each question = 4
So, the probability that an answer is correct = 
Total questions = 20
i.e. n= 20
Let x be the binomial variable that represents the number of correct answers.
So, the probability that the student has at least 10 correct answers.

[By using cumulative binomial table]
Hence, the probability that the student has at least 10 correct answers = 0.9961
Answer:
-3/1
Step-by-step explanation:
It's decreasing so it would be negative
221 sq ft.
A square has 4 sides
221/4 = 54.25 ft long