Mathematics
prettynaeja1
36

Can someone please please pleeeaaaese help me

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(1) Answers
karla519

The order of operations is:  P-E-M-D-A-S Parentheses Exponents Multiplication Division Addition Subtraction 1).  Parentheses:  (1/8 ÷ 1/5)  =  (1/8 · 5/1)  =  5/8        Multiplication:      5/8 · 7 2).  Parentheses:  (4/6 · 2)  =  4/3       Exponents:   2³=8,   6²=36       What does it say now ?  8 ÷ 36 + 4/3 + 6       Division:                          8 ÷ 36 = 4/18 = 2/9       What does it say now ?    2/9 + 4/3 + 6 3).  Exponents:  9³ = 729,  3² = 9       What does it say now ?  729 · 5/8 ÷ 11 · 9       Rearrange it:                (729 · 5/8 · 9) ÷ (11) 4).  Parentheses:  3-6/8 + 4 = 30/8 + 32/8 = 62/8      the other one:   3/4 (· 8) = 6           What does it say now ?     62/8 x 6 ÷ 3 5).  Exponents:  4³=64,  8²=64       Parentheses:  (64 + 7-2/7) = 448/7 + 51/7 = 499/7       the other one:  (64 + 3-4/9) = 576/9 x 31/9 = 1984/9                  What does it say now ?   499/7 ÷ 1984/9 - 10       Division:                 499/7 ÷ 1984/9 = 499/7 · 9/1984 = 0.32337... (rounded)       What does it say now ?       0.32337...  -  10    6).  Exponents:  6³ = 216       Parentheses:  9-3/4 - 6³ = 9-3/4 - 216 = 9.75 - 216 = -206.25       What does it say now ?   -206.25 + 3-5/6  Can you finish it off ?   

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