Can you send a picture of the triangle. Maybe take a screen shot?
Let the walker’s speed be W, then the biker’s is W+1.5W=2.5W. Difference in speed is 1.5W. Distance=speed times time, so 12.5=1.5W×1.5=2.25W, and W=12.5/2.25=1250/225=50/9=5.56 mph. The biker’s speed is 2.5W=125/9=13.89 mph to 2 Dec places.
(Note: “1.5 times faster than a walker’s speed” could not reasonably mean the biker’s speed=1.5W because this would give W=16.67 mph, which is very fast for a runner, let alone a walker (!), and a biker’s speed of 25mph.)
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Answer:
Option A is correct.
Step-by-step explanation:
Given: ;
for n = 2
=
for n =3
=
Simlarly , for n =4
=
and so on...
Common ratio(r) states that for a geometric sequence or geometric series, the common ratio is the ratio of a term to the previous term.
we have;
Now; by recursive formula for geometric series:
where is the first term and r is the common ratio:
Substitute the value of and
we have;
therefore, the explicit rule for the geometric sequence is;
Answer:
(2,-2)
Step-by-step explanation:
(5+(-1))/2=4/2=2
(-5+1)/=-4/2=-2