Nathan is building a tree house. He needs wooden boards that are 16.45 feet, 7.3 feet, and 12.8 feet in length. Nathan needs to make sure he buys enough wood to finish the project. What is the closest estimate of the total length, in feet, he needs? A. 30 B. 35 C. 38 D. 40

C = 38

Step-by-step explanation:

16.45 + 7.3 + 12.8

= 36.55

Closest estimate = 38

Since (B) 35 would be to little.

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

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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step-by-step explanation: