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3 years ago

Sally eats lunch at a restaurant and her bill is $12. She would like to leave a 15% tip for the waiter.

Mathematics

2 answers:

Aleks04 [339]3 years ago

7 0

Answer:

Hope this helps!

Step-by-step explanation:

Answer -Full amonut - $13.80. Tip amount - $1.80

First, convert the 15% to an actual number that can be used in a calculation. For percents, this is always done by simply dividing the percent (in this case 15%) by 100%.So, the conversational term "15%" becomes 15% / 100% = 0.15 in terms of a real mathematical number.

Second, you need to find out what 15% of your $12 meal cost is. This is always done by multiplying 0.15 by $12.00, or

0.15 x $12.00=$1.80.

So, the amount of tip you are going to leave is $1.80. full amount - 13.80

Andreas93 [3]3 years ago

6 0

Answer:

$ 13.80

Step-by-step explanation:

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While retreating, Fencer X parries Fencer Ys attack and ripostes, touching Y on the valid surface, which is registered on the ma

IgorLugansk [536]

Answer: Award a touch for X

Step-by-step explanation:

This is not a Mathematical question, it's a fencing question. It just requires the knowledge of the fencing sport.

Knowing the rules of the game, would let one know that fencer X landed the first legal touch on the valid surface of fencer Y.

Fencer Y's touch on Fencer X's valid surface arrives when fencer X already tripped while retreating and fell.

QED!

7 0

4 years ago

No files please! thanks

BigorU [14]

Answer:

y = $-\frac{1}{3}$

$2\frac{2}{3}=x$

Step-by-step explanation:

To solve a system of equations, solve one or both of the equations for the same variable. Then multiply one of the equations such that the coefficients of one variable are the additive inverse of the variable in the other equation. After doing so, add the two equations, then solve for the other variable using inverse operations. Finally, substitute the value of the other variable into one of the original equations in the system and solve for the unknown variable.

2x + y = 3

y = x - 2

First, manipulate the first equation such that the equation is solved for (y), this can be done using inverse operations,

y = 3 - 2x

y = x - 2

Now multiply the second equation by (2) so that the (x) coefficients are additive inverses of each other,

y = 3 - 2x

2y = 2x - 4

Add the equations,

3y = -1

Inverse operations,

3y = -1

/3 /3

y = $-\frac{1}{3}$

Now back solve, substitute the value of (y) into the equation and solve for (x),

$y=x-3\\$

Substitute,

$(-\frac{1}{3})=x-3$

$2\frac{2}{3}=x$

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3 years ago

I don't know how to do this

Dvinal [7]

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3 years ago

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