A comet is about 5.1 109 km from the Sun. Light travels at about
3.0 x 105 km per second. How many
seconds does it take for light from the
Sun to reach the comet?
5.1x109
3.0x105
Enter your answer in scientific notation.
[?] ~ 10 km
Enter

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

step-by-step explanation:

their are no angles. sorry cant .

if you need , reply with more info. u.

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for