Answer:
4x1
Step-by-step explanation:
Answer:
False
Step-by-step explanation:
10/7
Because root of 100 is 10, root of 49 is 7
Answer:

Step-by-step explanation:
We can prove that a tangent will always be perpendicular to the radius touching it. So, the other angle in the diagram is
.
Because all the angles of a triangle sum to
, we have that
.
We combine like terms on the left side to get
.
We subtract
on both sides to get
.
So,
and we're done!
80+70=150
270/150=1.8 hours before the two trains are 270 miles apart
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