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makvit [3.9K]
2 years ago
5

What's this answer???

Mathematics
1 answer:
Georgia [21]2 years ago
7 0
Youn could test all of the options by putting 8 and 3 in for a and b.

A.    a - b = 5
       8 - 3 = 5
            5 = 5

B.   a + b = 5
      8 + 3 = 5
            11 ≠ 5

C.   a - b = 8
      8 - 3 = 8
           5 ≠ 8

D.   a + b = 8
      8 + 3 = 8
            11 ≠ 8

As you can see, the only one that works is A. a - b = 5.
      
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Could someone answer and explain these please? Thank you!
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Answer 1:

It is given that the positive 2 digit number is 'x' with tens digit 't' and units digit 'u'.

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It is given that the sum of infinite geometric series with first term 'a' and common ratio r<1 = \frac{a}{1-r}

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Step-by-step explanation:


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