Where is the question?
d=vt
d=10(24/60)=4 miles
It is 4 miles to the gift store.
4mi(hr/30mi)(60min/hr)=8 min
It took him 8 minutes on the return trip, for a round-trip time of 32 minutes.
His average speed was (8mi/32min)(60min/hr)=15mph for the whole trip.
Answer:
6.7cm, 13.4cm, 15cm.
Step-by-step explanation:
Let x be one side of the triangle. The question tells us the other side is 2x.
We can relate all 3 sides using the Pythagorean Theorem:

That means the side lengths are 6.7cm and 2 x 6.7 cm = 13.4cm.
Answer is A, all interior angles and exterior sun must be 360. those are interior angles so they have to add up to 180