You have to find first the value of x, which means that you have to add all the interior angles and have the equation equal to 180 like this:
3x+5x-6+90= 180 (remember that the form of the triangle is a right triangle, which means you have a 90 degree angle.)
The value of x is going to be equal to 12. (x=12)
Now, substitute in the given angles
3(12)= 36
5(12)-6= 54
You have to remember that exterior angles also sum up to 180 degrees, and since we already have the value of the exterior angle, 3x, now we are able to know the value of what they are asking you for, which is a simple subtraction 180-36= 144.
Hope it helps! :)
Answer:
the last answer... i hope this helps
Step-by-step explanation:
Answer:
yz
Step-by-step explanation:
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answer is YZ
Step-by-step explanation:
the scanned description is very hard to understand.
so I think what happened :
16x² - 9 = 16
then the first error :
sqrt(16x²) - sqrt(9) = sqrt(16)
that is wrong, as you cannot split a + or - operation inside a sqrt function into + or - separate sqrt results of the parts.
so, correctly, the only possible transformation involving sqrt for both sides :
sqrt(16x² - 9) = sqrt(16)
but it would be even easier to clean up the various constant numbers with each other.
so,
16x² - 9 = 16
16x² = 25
and now we trashes the square root
sqrt(16x²) = sqrt(25)
4x = 5
x = 5/4 or x = -5/4
and I cannot see or understand for my life what the second equation was, as Daniel did something wrong, so I cannot deduct the original equation out of a supposedly wrong
y³ - 1 = 7
