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nasty-shy [4]
3 years ago
11

If using the method of completing the square to solve the quadratic equation x2 - 6x – 7 = 0, which number would have to be adde

d to "complete the square"?​
Mathematics
1 answer:
Vanyuwa [196]3 years ago
3 0

Answer:

(-3)^2

Step-by-step explanation:

You add 7 on both sides, giving you x^2 - 6x = 7

Then, take half of b, and square it. Giving you x^2 - 6x +(-3)^2 = 7

The answer will be (-3)^2 for this question, but this is not the full solution.

Hope this helped. Good luck on the rest!

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allochka39001 [22]

Answer:

11 cans of cat food...........

Step-by-step explanation:

£0.79 x 11 = £8.69

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6 0
3 years ago
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2/3 divided by 11/15
NNADVOKAT [17]
You need to implement the process of "flip-flop" and multiply which is where you flip the second fraction and multiply.

\frac{2}{3}÷\frac{11}{15}⇒\frac{2}{3}×\frac{15}{11}

Now you multiply across. 2×15=30 and 3×11=33

So now it is \frac{30}{33}

-----------------------------------------------------------
To reduce to the lowest terms, find the GCF common factor

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Divide both the numerator and denominator by 3

\frac{30}{33}÷\frac{3}{3}=\frac{10}{11}

Answer: \frac{10}{11}

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3 years ago
Find the mean and the median of this data set: 8, 6, 6, 3, 72, 7, 4, 2
icang [17]

Answer:

median: 6  ;  mean: 13.5

Step-by-step explanation:

The median is where you line up the numbers from least to greatest and add the 2 that are left since it was an even number and you get 6. The mean is where you add all 8 numbers and divide by 8, since that is how many numbers there are.

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lana [24]

Answer:

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y-y1=m(x-x1)

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y=-0.6x+0.6+24

y=-0.6x+24.6

y-(-0.6x)=24.6

y+0.6x=24.6

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Multiply the sale price by the commission rate:

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He earned $33,000.00

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