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zmey [24]
3 years ago
5

A man buys 3 chicken sandwiches at 2.75 each and 2 cokes at 1.19 and the tax is $0.64. he gives you 11.52. how much change shoul

d you give him back?
Mathematics
1 answer:
Artist 52 [7]3 years ago
3 0

3 chicken sandwiches at $2.75 each: 3*2.75= 8.25


2 cokes at 1.19: 2*1.19= 2.38


Tax: 0.64


8.25+2.38+0.64= 11.27


He gives you 11.52, to find how much you need to give him back, subtract how much he gives you by the amount that is charged (11.27)


11.52-11.27= $0.25

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If the diagonal of a square is approximately 12.73, what is the length of its sides?
Alja [10]

Answer:

The length of the sides of the square is 9.0015

Step-by-step explanation:

Given

The diagonal of a square = 12.73

Required

The length of its side

Let the length and the diagonal of the square be represented by L and D, respectively.

So that

D = 12.73

The relationship between the diagonal and the length of a square is given by the Pythagoras theorem as follows:

D^{2} = L^{2} + L^{2}

Solving further, we have

D^{2} = 2L^{2}

Divide both sides by 2

\frac{D^{2}}{2} = \frac{2L^{2}}{2}

\frac{D^{2}}{2} = L^2

Take Square root of both sides

\sqrt{\frac{D^{2}}{2}} = \sqrt{L^2}

\sqrt{\frac{D^{2}}{2}} = L

Reorder

L = \sqrt{\frac{D^{2}}{2}}

Now, the value of L can be calculated by substituting 12.73 for D

L = \sqrt{\frac{12.73^{2}}{2}}

L = \sqrt{\frac{162.0529}{2}}

L = \sqrt{{81.02645}

L = 9.001469325

L = 9.0015 (Approximated)

Hence, the length of the sides of the square is approximately 9.0015

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3 years ago
If the statement, "If I am hungry, then I am not happy," is assumed to be true, is its negation, "If I am not hungry, then I mus
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3 years ago
I've already saved $68 for the $200 video game system. How many hours does raj need to work to earn the remainder of the money h
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Total amount needed for the video game = $200

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Amount of money that is needed to be saved = 200-68  =132

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Hourly wage = $5.5

So, number of hours that Raj needs to work to earn $132 = $132/5.5 = 24 hours

Number of hours that Raj needs to work to earn the remainder of the money  = 24 hours


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Answer:

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Step-by-step explanation:

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