Answer:
a is 50
b is 100
and c is 130
Step-by-step explanation:
1) the reason why a is 50 because a circle has a constant angle which is 360 so we just need to subtract 360 by 310 to find out the missing angle to complete the entire circle.
2) a straight angle has a constant angle which is 180 degrees and now we have the given angle 80 so to complete the straight angle we just need to subtract 180 to 80.
3) now as we've found a, which is 50 degrees, we now also know that a straight angle is 180 degrees so just subtract 180 by 50 so we get 130.
I'm sorry I'm really bad at explanations but I tried and I hope it helps.
thank you
Answer:
(x + y)(1 + x - y)
Step-by-step explanation:
x + y + x² - y²
(x + y) + (x - y)(x + y)
[ Using a²-b² = (a-b)(a+b) ]
Taking (x + y) common
(x + y)(1 + x - y)
Answer:
1763
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Step-by-step explanation:
Answer:
x = -27
Step-by-step explanation:
-x/3 = 9
Multiply each side by -3
x/-3 * -3 = 9*-3
x = -27
