no it is not a tangent
for it to be a tangent to the circle Angle A would have to be a right angle.
to check if its a right angled triangle, you can use pythagoras.
this shows it is not a right angled triangle because this calculation does not give us 10.3
therefore it is not a tangent and there is no right angle
Answer:
a = 3
Step-by-step explanation:
First start writing out the binomial expansion of 
![[1^7] + [7C1 * 1^6 *(ax)] + [7C2*1^5*(ax)^2]+[7C3*1^4*(ax)^3]](https://tex.z-dn.net/?f=%5B1%5E7%5D%20%2B%20%5B7C1%20%2A%201%5E6%20%2A%28ax%29%5D%20%2B%20%5B7C2%2A1%5E5%2A%28ax%29%5E2%5D%2B%5B7C3%2A1%5E4%2A%28ax%29%5E3%5D)
as you can see from this, the last bracket will produce our 
term
Hope this helps, let me know if you have any questions :)
Answer:
One angle is 55 degrees, and the other is 125 degrees.
Step-by-step explanation:
Supplementary angles add up to be 180 degrees.
Since one angle measures 70 degrees more than the other, you can say that the other angle is x while the one angle is 70 + x.
x + x + 70 = 180
2x + 70 = 180
2x = 180 - 70
2x = 110
x = 55
So, one angle is 55 degrees, while the other is 55 + 70 = 125 degrees.
To make sure that they add up to be supplementary angles, 125 + 55 = 180.
Hope this helps!
Answer:
30
Step-by-step explanation:
To answer this question, we need to figure out the amount of cars that the train has. The info we have is that the train is moving at 3 cars every 30 seconds. To make this easier to solve, we can multiply the rate by 2 to get the minutely rate, which is 6 cars per minutes. Then you multiply 6 by 5 and you get 30 cars on the train.
