Mathematics, 19.09.2019 18:00 kierafisher05

The account balance of each of three children at the end of a month is shown below: john has −$2.75 cheryl has −$3.00 andrew has as much savings in his account as the amount john owes the bank. part a: on a blank paper, draw a number line from −4 to +4. plot points on the number line to show the account balances of the three children. label the points using the name of each child. describe in detail how you created and labeled this number line, and what it looks like in detail. (5 points) part b: determine whether john or cheryl owes the bank more. use absolute values and inequalities to write statements that justify your conclusion. (5 points)

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John (J): -2.75
Cheryl (C): - 3.00
Andrew (A): 2.75

C J A
^ ^ ^
(-4) - - -(-3) | - - (-2)- - -(-1)- - -(0)- - -(1)- - -(2)- - | (3)- - - (4) - - -

Labeled number line from -4 to 4...the whole numbers are separated by 3 spaces: 0.25,0.50.0.75.

Cheryl owes the bank more:
C < J < A

Cheryl owes the bank | -3.00 | = $ 3.00
John owes the bank | -2.75 | = $ 2.75
Andrew does not owe the bank...he has $ 2.75 in his account

Answer from: moses638

Part A:

My number line spans from -4 to 4. -4 is on the leftmost side while four is on the right. 0 is in the middle of all the numbers. On the tick mark number -3 there is a dot labeled Cheryl. 1/4 to the right o the -3 is another marking with the name John. To the right of the 0, there is the 3, on the tick mark for the three there is a mark that has Andrew on it.

Part B:

Cheryl owes more money than John does.

-$3.00 > -$2.75

|a| -$3.00 = $3.00

|a| -$2.75 = $2.75

Answer from: Quest

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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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The account balance of each of three children at the end of a month is shown below: john has −$2.75...