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Blizzard [7]
4 years ago
12

SOLVE THE EQUATION BY COMPLETING THE SQUARE!!!!! HELPPPPPPPPPP!!!!!!!!!!!

Mathematics
2 answers:
mote1985 [20]4 years ago
8 0

Answer:

Step-by-step explanation:

I can help you complete the square and solve the problem, but I'm going to have to leave it to you where and how to fill in your chart.  Never saw one like that, at least in the books I teach from (where are Christian-based, so that might be why.  I'm not common core.  But completing the square is the same process, no matter what!)

Begin by subtracting 9 from both sides to isolate the x terms to get:

x^2-8x=-9

Now we begin completing the square.  The rules are to take half the linear term, square it, and add it to both sides.  Our linear term is 8.  Half of 8 is 4, and 4 squared is 16.  So we add 16 to both sides:

(x^2-8x+16)=-9+16

This process has created a perfect square binomial on the left.  We will state that binomial along with simplifying on the right:

(x-4)^2=7

If we move the 7 back over, this is the equation in vertex form.  But to solve it, undo the square on the left by taking the square root of both sides:

x - 4 = ±\sqrt{7}

Add 4 to both sides to get the 2 solutions:

x = 4 ±√7

kvv77 [185]4 years ago
6 0

Step-by-step explanation:

i have answered ur question

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Complete the equation for the line
alexandr1967 [171]

Answer:

Gradient = rise/run

3/1

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Y-intercept is 1

Y=3x+1

8 0
3 years ago
What is the inverse of the function f(x) = 2x + 1?
Liula [17]

<em><u>Inverse</u></em><em><u> </u></em><em><u>Of</u></em><em><u> </u></em><em><u>Functions</u></em>

I use a certain way to find the inverse of a function.

Replace H(x) with y.

y=2x+1

Replace y and x.

x=2y+1

Find y.

x-1=2y

Divide both sides by two.

x-1/2=y

<em>The</em><em> </em><em>Answer</em><em> </em><em>Is</em>

<em>h^{ - 1} (x) =  \frac{x - 1}{2}</em>

4 0
3 years ago
Alon started in 60% of his team’s basketball games this season. He started a total of 12 games. How many games did Alon’s team p
KatRina [158]

Answer: The correct option is D which is 20 games.

Step-by-step explanation:

Let x = total number of basketball games that was played by the team this season.

Alon started in 60% of his team’s basketball games this season. This means that he started in a total number of 60 percent of x basketball games this season.

60% of x basketball games this season = 60/100 × x

= 0.6×x = 0.6x

From the information given, Alon started a total of 12 basketball games this season. Therefore,

0.6x = 12

x = 12/0.6 = 20

Alon’s team played a total number of 20 games this season?

5 0
3 years ago
A shop advertises 20% off its prices in a sale.
sdas [7]

Answer:

£45

Step-by-step explanation:

Say the original price is x. When we take 20% off, that's basically multiplying x by 20% and then subtracting that product from the original price, which is x:

x - 20% * x = 80% * x = 0.8x

Now, this equals £36, so we just set them equal:

0.8x = 36

Dividing by 0.8 from both sides, we get:

x = £45

Thus, the answer is £45.

6 0
3 years ago
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3x+1+2x=2+4x which would not be a step in solving
KIM [24]

Answer:

hey u there answer me backkk

Step-by-step explanation:

4 0
3 years ago
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