2 years ago

Subtract. ( 2 9 v)−(− 1 3 v+ 5 9 ) A. 5 9 v+ 5 9 B. 1 9 v+ 5 9 C. 5 9 v− 1 3 D. 5 9 v− 5 9

Mathematics

1 answer:

victus00 [196]2 years ago

7 0

Answer:

This is the answer 42v−59

Step-by-step explanation:

I have no idea what your other choices are but this is the correct answer. I hope it helps

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There are two mystery numbers the sum of eight times the first number and 10 times the second number is 24. The sum of seven tim

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Answer:

x = the first mystery number = 2

y = the second mystery number = 0.8

Step-by-step explanation:

Let

x = the first mystery number

y = the second mystery number

8*x + 10*y = 24

8x + 10y = 24

7*x + 10*y = 26

7x + 10y = 26

8x + 10y = 24 (1)

7x + 10y = 26 (2)

Subtract (1) from (2) to eliminate y

8x - 7x = 26 - 24

x = 2

Substitute x = 2 into (1)

8x + 10y = 24 (1)

8(2) + 10y = 24

16 + 10y = 24

10y = 24 - 16

10y = 8

y = 8/10

y = 0.8

x = the first mystery number = 2

y = the second mystery number = 0.8

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Step-by-step explanation:

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