Mathematics, 04.02.2021 09:30 davisparker5269

Combine the like terms 4x+ 17x + 5y + 19 - 28b + 48y +87a - 24x

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Answer from: ragadbat

-3x + 53y + 19 + (-28b) + 87a

First off, you need to circle every single thing on this expression, including the math symbols. So in order to do that, circle the symbols with the number behind:

19 - 28b -> (19) (-28b)

All of your numbers should end up like this:

(4x) (17x) (5y) (19) (-28b) (48y) (87a) (-24x)

Next, place an addition symbol in between all of them.

4x + 17x + 5y + 19 + (-28b) + 48y + 87a + (-24x)

Then, rearrange the numbers with the same variable (ex. a in “87a” is the variable), and the numbers without a variable as-well.

(4x + 17x + (-24x)) + (5y + 48y) + (19) + (-28b) + 87a

Finally, add all of the variables with the same letter with each other. You also need to add the numbers without one but since 19 is the only number without a variable in this expression you don’t add it to anything.

Your answer should come out to this:

-3x + 53y + 19 + (-28b) + 87a

Answer from: Quest

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction

Answer from: Quest

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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Combine the like terms 4x+ 17x + 5y + 19 - 28b + 48y +87a - 24x
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