Mathematics, 28.10.2019 21:31 michaelhal414

Write an expression that represents "the sum of x and 8". x - 8 8x x + 8

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Answer from: samanthashade3434

The expression that represents "the sum of x and 8" is x + 8

Solution:

Given, a sentence “the sum of x and 8”

Now, we have to write an expression that represents the above given line and check the correct option.

So, now, let us take the given expression and convert it into the polynomial form.

Take, “the sum of x and 8" → sum of x and 8 → x + 8.

Here "+" denotes sum or addition.

Hence, expression for “the sum of x and 8” is x + 8 and option c is correct.

Answer from: Quest

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

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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