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garik1379 [7]
3 years ago
8

What is 12 X -19 equals 5X -5

Mathematics
1 answer:
givi [52]3 years ago
5 0

Answer:

4/7 or .57

Step-by-step explanation:

12x-9=5x-5

-5x. +9

7x=4

÷7

X=4/7 or .57

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There are 3 boys to every 5 girls in mrs. kennedy's class. if there are 40 students in the class, how many of those students are
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4 0
3 years ago
I need help ASAP!!
Viktor [21]

Answer:


\frac{64}{49}


Step-by-step explanation:


As we can see the given expression as three complex parts and all are being multiplied.


Lets simplify each part separately and then multiply all of them in the end


Part1


(\frac{8.4.2}{8.7})^{2}  

Cancelling 8 in numerator with 8 in denominator


(\frac{4.2}{7})^{2}


(\frac{8}{7})^{2}


\frac{64}{49}


Part2


(\frac{8^{0} }{7^{-3} })^{3}


simpliying


(\frac{1}{7^{-3} })^{3}


({7^{3} })^{3}


7^{9}


Part3


Third part is 7^{-9}, and it does not need to be further simplified


Now multiplying all the three parts


\frac{64}{49}.7^{9}.7^{-9}


\frac{64}{49}.7^{9-9}


\frac{64}{49}.7^{0}


\frac{64}{49}.1


\frac{64}{49}


So our final answer is \frac{64}{49}



5 0
3 years ago
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