About 90 maybe but not sure
Use substitution...
x-2(2x-3.5)=-14
x-4x+7=-14
-3x=-21
x=7
Plug in x into one of the equations to get y...
y=2(7)-3.5
y=10.5
(7,10.5)
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Answer:
51°
Step-by-step explanation:
Remember, all 3 angles must add up to 180°
We can tell that this triangle is a right triangle, or a triangle that has a 90° angle. We also have another angle given, which is 39°. Currently we have two angles given.
Since all 3 angles have to add up to 180°,
90 + 39 + x = 180°
129 + x = 180°
180 - 129 = x
x = 51°
The missing angle is 51°
To see if your calculation is correct, you could add all 3 angles, and it should give you 180 as a sum.
90 + 39 + 51 = 180
Correct!
Yes
Square root of 4 times the square root of 3 is the square root of 12
The square root of 4 is a perfect square which is 2
2x4 is 8
The simplified answer is -8x the square root of 3
