we know that

we have

substitute the value of
in the expression above

therefore
<u>the answer is</u>

Answer:
4xy See image.
Step-by-step explanation:
Remember for division questions to use Keep, Change, Flip. You will Keep the first term the same. Change the divide to times. And Flip the second term (turn it upside down, in math this is called the reciprocal)
Also, you need to know when you you get to the part where everything is times, then you times: top×top, and bottom×bottom.
Once everything is times, you can rearrange the order and cancel (cancel is not really the mathy thing happening, you are dividing---
x/x is 1 and y/y is 1,
10/5 is 2, 6/3 is 2) See image.
Answer:
60°
Step-by-step explanation:
The value of y is half the measure of the arc the chord subtends:
y = 120°/2
y = 60°
As we know that the sum of two sides of a triangle is greater than the third side ...
Option A is correct because 4+5=9>8
Option B is correct because 9+12=21>15
Option C is correct because 12+5=17>13
Hope it helps.....