Answer:
8.D
9.A
Step-by-step explanation:
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Answer:
9.
10.
Exaplanation:
<em>Please refer to my Answer from this question to know more about the slope of a line: <u>brainly.com/question/24599351</u></em>
In graph 9, we can see a line that is perfectly horizontal. Graphs of lines that are horizontal has a slope of, .
If you want we can still solve for the slope of the line in graph 9, without acknowledging that the line is horizontal.
In graph 9, we can see that the points, and , is on the line. These can be our points and .
In graph 10, we can see that the points, and , is on the line. These can be our points and .
Answer:
(b) √5
Step-by-step explanation:
The square root of an integer is rational if the integer is a perfect square. You probably know the first few perfect square integers are 1, 4, 9, 16, 25, 36, ...
The integer 5 is not on that list, so its square root will be irrational.
√5 is irrational
<h2>Steps:</h2>
So for this, I will be completing the square to solve for x. Firstly, add 10 and subtract 30x on both sides of the equation:
Next, we want to 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 square the quotient. Once you get that result, add it to both sides of the equation:
Now, factor the left side:
Next, square root both sides:
Now, add 15 to both sides of the equation:
This is the <em>exact</em> solution. To find the approximate solution, solve the left side twice -- once with the plus sign, once with the minus sign:
<h2>Answer:</h2>
In short:
- Exact Solution:
- Approximate Solution (Rounded to the hundredths):
Answer:
2 radical 14
Step-by-step
square root of 7(7-3)(7-5)(7-6)
which is the square root of 56
which is about 7.5 or 2 radical 14