Question

Answer All The Questions
1. In a cyclic quadrilateral BDEF, <BDF=66° and <DBC=57°, O is the centre of the circle and ABC is tangent at B. Calculate
I. <EBF
II. <EBD
III.<FED
IV.<FBD
2. A woman travelled from Lagos to Ondo a distance of 350km. Her average speed on the outward journey was ykm. On the return journey, her average speed was 10km/hr faster and therefore she completed the return journey 37.5minutes earlier. Find
A. The value of y
B. Get average speed on the return journey in km/hr
C. The total time taken for the whole journey in hrs.
I'll mark brainliest plssssssss​

Answer 1

Answer:

Step-by-step explanation:

From the attachment, we can see that

<EBF = 33°

<EBD = 33°

<FED = 114°

<FBD = 66°

Part 2

The value of y is either of 70 or -80. But then, we all know that speed can not be negative, so the speed was 70 km/h

The return speed is y + 10 = 70 + 10 = 80 km/h

Total time = 350/70 + 350/(70+10)

Total time = 5 + 4.375

Total time = 9.375 hr