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Blizzard [7]
3 years ago
12

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

Mathematics
2 answers:
mote1985 [20]3 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]3 years ago
6 0

Step-by-step explanation:

i have answered ur question

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What is the quotient 36 divided by 6
Dafna11 [192]

Answer:

6

Step-by-step explanation:

36/6

6, 12,18,24,30,36

1 2. 3. 4. 5. 6

3 0
3 years ago
In triangle KLM, if K is congruent to L, KL = 9x - 40, LM = 7x - 37, & KM = 3x + 23, find x & the measure of each angle.
timurjin [86]
This is hard to solve when we don't know the visual graph this question is trying to refer from
6 0
2 years ago
8n = -3m + 1; n = -2, 2, 4
bogdanovich [222]

I am assuming you want to solve for m in each case

8n = -3m + 1

8(-2) = -3m + 1

-16 = -3m + 1

-3m = -17

m = \frac{17}{3}

8(2) = -3m + 1

16 = -3m + 1

-3m = 15

m = -5

8(4) = -3m + 1

32 = -3m + 1

-3m = 31

m = \frac{31}{3}

8 0
3 years ago
Read 2 more answers
Suppose you have a five dollar off coupon at a fabric store you buy a fabric that cost $10 per yard
Lunna [17]
<h3>Answer:</h3>

1.) 10x-5=y

2.) $85

3.) 5.25 yards of fabric.

<h3>Step-by-step explanation:</h3>

1.) To write an equation for this problem, we need to figure out what every value means:

the variable x, represents the amount of yards of fabric you can buy

the variable y, represents the total amount of money after you found out (x) or the amount of yards of fabric.

1 yard of fabric equals $10, and we have a $5 coupon (-5)

Our equation is:

10x-5=y

This equation represents the relationship between the total cost of fabric, and the amount that you can buy.

2. In order to solve this problem we need to use our equation, one value is given which is 9.

9 represents x, the amount of yards of fabric.

Substitute 9 into x:

10(9)-5=y

<h3>Solve:</h3>

90-5=y

85=y

85 represents the cost of 9 yards of fabric, including the $5 coupon.

3.) This problem is similar to #2, although it's flipped.

The value given is $47.50, which represents (y), the total amount of money after (x) was found out.

But, we need to figure out (x).

Substitute $47.50 into (y):

10(x)-5=$47.50

Next, we need to figure out x by solving the opposite.

Adding the coupon to our answer can represent 10(x).

$47.50+5=52.50

10(x)=52.50

Lastly, divide both sides of the equation by 10.

10(x) / 10=52.50 /10

x=5.25

5.25 represents the amount of yards of fabric purchased if you paid $47.50.

7 0
2 years ago
Sawyer’s mom paid $1.50 for a 3/4 pound box of cereal. How much is that per pound? Question 4 options: $1.50 $1.75 $2.00 $2.50
Lynna [10]
The answer is $2.00, cause it's 50¢ a quarter.
8 0
3 years ago
Read 2 more answers
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