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boyakko [2]
3 years ago
11

Mr. Dupee bought a novel at a bookstore on sale for 20% off its regular price of $29.99. Mr. Edgar bought the same novel at a di

fferent bookstore for 10% off its regular price of $25. Who received the better discount? EXPLAIN ANSWER PLEASE :3
Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
3 0
Mr Dupee: $29.99x(1-20%)
                =$29.99x0.8
                =$24.00
 
<span>Mr. Edgar: $25x(1-10%)
                =$25x0.9
                =$22.50
 
$24.00>$22.50
Mr. Edgar got a better </span>discount.
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Which of the following equations is represented by the graph?
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Answer:

••••••••••••••••••••The answer is Y=2/3x

6 0
3 years ago
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17x-3y=4 2x-4y=1 the solution to the system of equations is
Burka [1]

ANSWER

x=\frac{13}{62}

and


y= \frac{-9}{62}e have



EXPLANATION




17x-3y=4---(1)


2x-4y=1



Let us make y the subject and call it equation (2)


2x=1+4y


x=\frac{1}{2}+2y--(2)



We put equation (2) in to equation (1)




17(\frac{1}{2}+2y)-3y=4


\frac{17}{2}+34y-3y=4



34y-3y=4- \frac{17}{2}


Simplify to get,



31y= \frac{8-17}{2}



31y= \frac{-9}{2}


Divide both sides by 31,



y= \frac{-9}{2} \div 31



y= \frac{-9}{2} \times \frac{1}{31}




y= \frac{-9}{62}


We put this value in to equation (2) to get,



x=\frac{1}{2}+2\times -\frac{9}{62}




x=\frac{1}{2} -\frac{18}{62}


We collect LCM to obtain,



x=\frac{31-18}{62}



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7 0
3 years ago
While exercising, a person’s recommended target heart rate is a function of age. The recommended number of beats per minute, y ,
Deffense [45]

Answer:

170 heart beat per minute.

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While exercising, a person’s recommended target heart rate is a function of age. The recommended number of beats per minute, y, is given by the function y = f(x) = − 0.85x + 187 where x represents a person’s age in years.

So, if my age is 21 years i.e. x = 21, then the number of recommended heart beats per minute for my age will be

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{Taking the larger integer value}

8 0
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Answer:

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Given data

We are told that

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3. <br> Which is the graph of the function y = 2(4)x?
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