Answer:
a=14
Step-by-step explanation:
cross multiply using the butterfly method
7a=98
then divide by 7
4.45 rounded to the nearest tenth is 4.6 because the rule is five and up is up and 4 and lower is down
Subtract 5 from both sides
Answer:
∠AOC = 50°
B is correct.
Step-by-step explanation:
In the given figure of protractor measure the ∠AOC
Please find the attachment of protractor.
OA is horizontal line which is base of protractor.
In angle AOC, two legs OA and OC
OA is base of protractor. OC another leg.
Now we see position of leg OC of angle AOC.
∠AOC is acute angle. So, see the number bottom of protractor.
Hence, the measure of ∠AOC is 50°
So the length of the arc is given by: l = r*theta, here theta is the intercepted angle in unit radian
So, 80 degrees = 80/360 * 2pi = 4/9 * pi
So l = r * (4/9 * pi), the constant ratio is 4/9 * pi