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denpristay [2]
3 years ago
10

What is the intermediate step in the form (x+a)^2 = b as a result of completing the square for the following equation?

Mathematics
2 answers:
Pepsi [2]3 years ago
7 0

Assuming you are speaking of the Real Numbers…

x^2+66=14x+15

x^2 - 14x + ?? = -51

x^2 - 14x + (half of -14 squared) = -51 + (half of -14 squared)

x^2 - 14x + 49 = -51 + 49

(x - 7)^2 = -2

By the way, in the real number system, you can’t square any number and get a negative so the above equation has no solution. If you allowed for complex solutions…there would be two of those.

lawyer [7]3 years ago
6 0

Answer:

Sorry don't know the answer.

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Which table has a constant of proportionality between y and x of 1/5? (from khan academy)
katovenus [111]

Answer:

C

Step-by-step explanation:

Solve for each choice until you get the answer 1/5.

A.

2 - 4/5

10/5 - 4/5 = 6/5; this is not 1/5

B

8 - 8/5

40/5 - 8/5 = 32/5; this is not 1/5

C

3 - 16/5

15/5 - 16/5 = -1/5

5 - 26/5

25/5 - 26/5 = -1/5

7 - 36/5

35/5 - 36/5 = -1/5; although this is negative, it still has the same proportionality of 1/5

6 0
3 years ago
Need help with questions 5 and 6
kirza4 [7]

Answer:


Step-by-step explanation:


7 0
3 years ago
Simplify negative 15.5 divided by 5.
Naya [18.7K]

Divide:

-15.5/5 = -3.1

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7 0
3 years ago
Read 2 more answers
What is the range of this piecewise function
White raven [17]

Answer as a compound inequality: -4 \le y < 2

Answer in interval notation:  [-4, 2)

=============================================

Explanation:

The range is the set of all possible y outputs of a function. When dealing with a graph like this, we just look at the highest and lowest points to determine which y values are possible.

The lowest point occurs when y = -4. We include this value. So far we have y \ge -4 which is the same as -4 \le y

The upper ceiling for the y value is y = 2. We can't actually reach this value because of the open hole at (-3,2). So we say that y < 2

Combine -4 \le y and y < 2 to get the compound inequality -4 \le y < 2

This says y is between -4 and 2, including -4 but excluding 2.

To convert this to interval notation, we write [-4, 2) where the square bracket says to include the endpoint and the curved parenthesis says to exclude the endpoint.

6 0
3 years ago
When a quadratic equation has a repeated solution it's called
Talja [164]
A blank root or a root of blank 
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