There are 129 tens because 43x30 (3 tens) is 1,290
Answer: x=12
Step-by-step explanation:
5x-15=2x+21(AIA)
3x-15=21
3x=36
x=12
The answer is 31
29 - 13 is 16
16 + 15 is 31
Answer:
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Step-by-step explanation:
The sum of the internal angles in a simple pentagon is 540°.
105 + 135 + 92 + 87 = 419
540 - 419 = 121
The angle is 121