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ivanzaharov [21]
3 years ago
11

Which operation should be preformed first when evaluating the expression; 4+12-5x7?? What is the value of the expression; 9+ 4 t

o the second power divided by 2? Plz show work for both problems, n thanks!!
Mathematics
1 answer:
Svetlanka [38]3 years ago
6 0
I ) Multiplication followed by addition and then subtraction
4 + 12 - 5 x 7
= 4 + 12 - 35
= 16 - 35
= (-19)
ii ) (9+4) sqaured
= (13) squared
= 169
Equation:
(9+4) squared / 2
= 169/2
= 84.5
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marin [14]

5^(x+7)=(1/625)^(2x-13)


We move all terms to the left:


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Domain of the equation: 625)^(2x-13))!=0


x∈R



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