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3 years ago

5

Keisha has $20.08 in her purse. She buys a book for $8.72 . How much does she have left?

2 answers:

antoniya [11.8K]3 years ago

8 0

This is very simply math.

Subtract.

20.08-8.72=11.36

Your answer is $11.36 left.

torisob [31]3 years ago

7 0

Simply subtract 8.72 from 20.08 and you get the answer which is 11.36$

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Answer:

(1)

Karen: $y = 2x +3$

Alice: $y = 2x +1$

(2): Slope is 2

(3) y intercept

$b = 3$ --- For Karen

$b = 1$ --- For Alice

(4) They do not intersect

(5) No solution

(6) No

Step-by-step explanation:

Given

$x = loaves$

$y = amount$

Solving (1): Complete the equation.

For Karen:

$m = 2$ --- the rate

$b = 3$ --- additional spendings

For Alice:

$m = 2$ --- the rate

$b = 1$ --- additional spendings

The general equation is;

$y = mx +b$

For Karen, it becomes

$y = 2x +3$

For Alice, it is:

$y = 2x +1$

(2): The slopes.

In (1), we have:

$m = 2$ --- the rate (for both Karen and Alice).

This rate implies the slope.

<em>Hence, the slope is 2</em>

(3): The y intercept.

The additional spendings in (1) means the y intercept.

So, we have:

$b = 3$ --- For Karen

$b = 1$ --- For Alice

(4) Because they have the same slope, they do not intersect

(5) Number of solutions.

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$y = 2x +1$

Subtract both equations

$y-y = 2x-2x +3-1$

$0 = 2$

This means there is no solution

(6) Can they spend the same amount on the same number of loaves

In (5), the equations have no solution

<em>Hence, it is not possible to spend the same amount for the same number of loaves</em>

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3 years ago