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Pachacha [2.7K]
3 years ago
11

1. ) Some number was added to 7.4. This sum was then divided by 18. Finally, the quotient was multiplied by 6. The product was 6

. What was the number? _____________
Mathematics
1 answer:
Mumz [18]3 years ago
4 0

Answer:

We have [ ( x + 7.4 ) ÷ 18 ] x 6 = 6;

Then,  ( x + 7.4 ) ÷ 18 = 1;

x + 7.4 = 18;

x = 10.6;

Step-by-step explanation:


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Simplify completely quantity x squared plus 4 x minus 45 all over x squared plus 10 x plus 9 and find the restrictions on the va
dem82 [27]
(x² + 4x - 45)/(x² + 10x + 9) 
<span>
Numerator = N = x² + 4x - 45 </span>
= x² + 9x - 5x - 45 
= (x² + 9x) - (5x + 45) 
= x(x + 9) - 5(x + 9) 
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<span>
Denominator = D = x² + 10x + 9 </span>
= x² + x + 9x + 9 
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<span>
Hence, the given expr. = N/D </span>
= {(x + 9)(x - 5)}/{(x + 1)(x + 9) 
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<span>
Restrictions : x ≠ - 1, x = 5 </span>


I hope my answer has come to your help. Thank you for posting your question here in Brainly.
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