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Oksi-84 [34.3K]
3 years ago
5

I need help is due today!!!:Cool tees is having a back to school sale where all t-shirts are discounted by 15%. Joshua wants to

buy five shirts, one cost $9.99, two cost $11.99 each, and two others cost $21.00 each. What is the total cost of the shirts including the discount??
Mathematics
1 answer:
Softa [21]3 years ago
8 0

Answer:

$64.5745

Step-by-step explanation:

You had to do this:

9.99+11.99+11.99+21.00+21.00=75.97

 x     =     85

75.97      100        85*75.97=6457.45

100x=6457.45

6457.45/100= 64.5745

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F(x) = 9x-7. If f(x)= -7, find x.​
svlad2 [7]

Answer: the answer is 56

Step-by-step explanation: since the f(x) is -7 it would be 9 times -7 then minus 7 and get the answer.

3 0
3 years ago
Zn (s) + Cu2+ (aq) → Cu (s) + Zn2+ (aq)
White raven [17]
The answer is A zinc is oxidized and copper gets reduced
8 0
3 years ago
Read 2 more answers
Find the surface area of a pyramid
Sergeeva-Olga [200]

Answer:

88 inches ^2

Step-by-step explanation:

Well find the side of a triangle first.

4*9=26

26/2=18

There are 4 identical triangles

18*4= 72

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5 0
3 years ago
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}



x=\frac{13}{62}








7 0
3 years ago
Someone please help me with this problem
WINSTONCH [101]

Answer:

see consider there are three angle 80 and x and 45(the measure of line is 180 so subtract 180 by 125 u will get 45) now measure of angle is 180 soo the value of x is 55degree so value of x is equal to that of z therefore value of z also 55 degree

4 0
3 years ago
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