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marishachu [46]
3 years ago
12

31)

Mathematics
2 answers:
kifflom [539]3 years ago
5 0
It is 70 I believe you could check with an online calculator
lilavasa [31]3 years ago
5 0

Answer:

IT IS NOT 70!!!

Step-by-step explanation:

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8 miles is approximately equal to 6 km. How many km are equal to 28 miles? How many miles are equal to 42 km?
Pani-rosa [81]
1 mile = about 1  1/3 km because 8/6  = 1 1/3
so 28 times 1 1/3 = 37 1/3  (first answer)

42 / 6 = 7 
7 miles are in 42 km (2nd answer)
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3 years ago
What is the following expression mulituply out (5x-6y)(5x-6y)
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Answer:

25x^2 - 60xy + 36y^2

Step-by-step explanation:

(5x - 6y) ( 5x - 6y)

Use foil to get the result when this is expanded.

F: (first term in each factor): 5x*5x = 25x^2

I:  Use the last term first factor multiplied by first term second factor

- 6y * 5x = - 30xy

O:Outside. Use first term first factor and last term second factor

5x * -6y = - 30xy

L: last term in both factors -6y * - 6y = 36y^2

All them together

25x^2 - 30xy - 30xy + 36y^2

and combine

25x^2 - 60xy + 36y^2

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