If root x + root y = root 45 and x and y are positive integers, then find the value of root x + y.

x = 5

y = 20

sqrt(x + y) = sqrt(25) = 5

Step-by-step explanation:

I think this is one of those things where you think you've been tricked and when you see the answer, you know you have.

The root of 45 = root (5 * 3 *3) = 3sqrt(5)

Now you need to find some way of making x and y come to 3 sqrt(45)

How about this? sqrt(5) + sqrt(20)

square root 5 = 1 *sqrt(5)

square root 20 = sqrt(2 * 2 * 5) = 2 sqrt(5)

x = sqrt(5)

y = 2*sqrt(5)

1sqrt(5) + 2 sqrt(5) = 3 sqrt(5) which is the same thing as sqrt(45)

It gets worse with part 2

sqrt (x + y) = sqrt(5 + 20) = sqrt(25) = 5

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

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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rauschg

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step-by-step explanation: