Consider the series ∑n=1 to [infinity]an where an=(−1)^nn^2/(n^2−5n−4). in this problem you must attempt to use the ratio test to decide whether the series converges. compute l=limn→[infinity]∣∣∣an+1an∣∣∣ enter the numerical value of the limit l if it converges, inf if it diverges to infinity, minf if it diverges to negative infinity, or div if it diverges but not to infinity or negative infinity. l= minf which of the following statements is true? a. the ratio test says that the series converges absolutely. b. the ratio test says that the series diverges. c. the ratio test says that the series converges conditionally. d. the ratio test is inconclusive, but the series converges absolutely by another test or tests. e. the ratio test is inconclusive, but the series diverges by another test or tests. f. the ratio test is inconclusive, but the series converges conditionally by another test or tests.

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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answers

rauschg

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step-by-step explanation: