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Eva8 [605]
3 years ago
14

Solve the equation by completing the square x^2-18x+58=0

Mathematics
1 answer:
kherson [118]3 years ago
6 0

We want to add something to the right side of the equation to get 81.


x^2 - 18x + 81 = 23


The final step is to factor and subtract 23. (Subtracting 23 is a unnecessary, but whatever)


(x - 9)^2 - 23 = 0


So "x" = 9 + sqrt23


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The correct value is 5.

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What is 60 divided by 5 +1 X(12-6)? ....(step by step)what to do
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Step by step explanation

Going by BODMAS

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PLX ANSWER THIS!!! I BEG YOU. ASAP!!! THX!! =UwU=
kodGreya [7K]

It should be noted that the relationship is not linear based on the information illustrated as the difference between the numbers aren't the same.

<h3>How to illustrate the information?</h3>

It should be noted that an equation is simply used to illustrate and express the relationship between the variables.

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3 years ago
12. Find the value of x. (2 points - 1 point for equation, 1 point for answer)
Viktor [21]
Answer: x = 7

-----------------------------------------

Angle STU is 15x. This is the exterior angle on the right side of the triangle
Subtract this from 180 to get angle RTS

angle RTS = 180 - (angle STU)
angle RTS = 180 - 15x

Focus solely on triangle RTS. If needed, erase the portion that extends out toward point U
If we focus on the triangle only, then angle R = angle T since they are the base angles of the isosceles triangle. We know that triangle RST is isosceles since RS = ST is given to us.

Because angle R = angle T, we know 
angle R = 180-15x
angle T = 180-15x
and we also know
angle S = 4x+2
since that's given as well

Add up the three angles and set that sum equal to 180. Then solve for x
R+S+T = 180
(180-15x)+(4x+2)+(180-15x) = 180
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-26x + 362-362 = 180-362
-26x = -182
-26x/(-26) = -182/(-26)
x = 7
5 0
3 years ago
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