1 answer:
Answer:
(16/9)pi
Step-by-step explanation:
Where we firstly convert our angle at the centre(O) into radians
40/180 × pi = (2/9)pi
;Then Length of arc AB = radius × angle at O in radians
Arc AB = 8 × (2/9)pi
;Length AB = (16/9)pi
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Cosine law
a^2 = b^2 + c^2 - 2(b)(c)cosA
a^2 = 2^2 + 4^2 - 2(2)(4)cos78
a = 4.08
a = 4.1
-2x + y = 9
-4x - y = 9
----------------- +
-6x = 18
x = -3
-2x + y = 9
-2(-3) + y = 9
6 + y = 9
y = 3
The two intergers are 20 and 22. Hope this helps. :D
Answer: Yes.
Step-by-step explanation: 20% of 100 would translate into .2 out of 1
Answer:
11.968
Step-by-step explanation:
