Mr. jones has 12exams in 2 hours. At that rate how many hours would it take to grade 48 exams

Solution:

Given that,

Mr.jones has 12 exams in 2 hours

From given,

12 exams ⇒ 2 hours

At that rate how many hours would it take to grade 48 exams

Let "x" be the time taken for 48 exams

Therefore,

12 exams ⇒ 2 hours

48 exams  ⇒ "x" hours

This forms a proportion and solve the sum by cross multiplying

Thus it takes 8 hours to grade 48 exams

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

rauschg · hand

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step-by-step explanation:

the 1st digit is in the 100s n its 1

step-by-step explanation:

3,589÷18 = 199.389

so the first digit of the quotient is in the 100s n its 1