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Debora [2.8K]
3 years ago
13

Solve by completing the square X^2+12x-13=0

Mathematics
1 answer:
coldgirl [10]3 years ago
7 0
I order to do this question, you need to put the 13 on the right side. So now you have x^2+12x+0=13. Now, take half of 12, and square it. Add this to both sides to get x^2+12x+36=49. Now factor the left side by putting the half of 12 into this blank to get, (x+_)^2=49. Final Answer is,
(x+6)^2=49.

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Evaluate the expression when x = 6
ivolga24 [154]

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There is $2,134 in a savings account. If next year the money is two times as much, what is the total amount in the savings accou
Dafna1 [17]

Hello!

To find our answer, we just multiply by 2.

2,134(2)=4,268

Therefore, there would be $4,268.

I hope this helps!

6 0
3 years ago
Read 2 more answers
I do t know how to do it
Luba_88 [7]

We know: the sum of the angles measures in a triangle is 180°.

Therefore we have the equation:

64° + 75° + α = 180°

139° + α = 180°      <em> subtract 139° from both sides</em>

α = 41°

α and ∠2 are Supplementary Angles - they add up to 180°.

α + m∠2 = 180°

41° + m∠2 = 180°    <em>subtract 41° from both sides</em>

<h3>m∠2 = 139°</h3>

7 0
3 years ago
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