C Cher38 New member Joined Aug 18, 2012 Messages 1 Aug 18, 2012 #1 32 +22 . 5 - sqrt (25)8-4. / 2 +2 Ans; (a) 3 (b) 15 (c) 6 (d) 24 My attempt.......... 9+4 x 5 - 5 4. / 4 = 13 x 5 -5 = 65-5 = 60/1 My ans 60. 1 Answer key does not show 60 as a possible answer. Please show how to solve this prob. thanks
32 +22 . 5 - sqrt (25)8-4. / 2 +2 Ans; (a) 3 (b) 15 (c) 6 (d) 24 My attempt.......... 9+4 x 5 - 5 4. / 4 = 13 x 5 -5 = 65-5 = 60/1 My ans 60. 1 Answer key does not show 60 as a possible answer. Please show how to solve this prob. thanks
L lookagain Elite Member Joined Aug 22, 2010 Messages 3,249 Aug 18, 2012 #2 Cher38 said: 32 +22 . 5 - sqrt (25)8-4. / 2 +2 Ans; (a) 3 (b) 15 (c) 6 (d) 24 My attempt.......... 9+4 x 5 - 5 4. / 4 = 13 x 5 -5 = 65-5 = 60/1 My ans 60. 1 Answer key does not show 60 as a possible answer. Please show how to solve this prob. thanks Click to expand... Cher85, what you started with is (correct me if I'm wrong): \(\displaystyle \dfrac{3^2 \ + \ 2^2 \cdot 5 \ - \ \sqrt{5}}{8 \ - \ 4./2 + 2}\) (There might be a fraction bar immediate above that didn't show up.) You must use PEMDAS. For the numerator, as you typed, 9 + 4 X 5 - 5 will be treated as 9 + 20 - 5 Continue with that. And for the denominator, your next step is incorrect. Instead, 8 - 4./2 + 2 will become 8 - 2 + 2 Continue with that part. ----- As per PEMDAS, the multiplications and dividing (from left to right) take precedence over the additions and subtractions.
Cher38 said: 32 +22 . 5 - sqrt (25)8-4. / 2 +2 Ans; (a) 3 (b) 15 (c) 6 (d) 24 My attempt.......... 9+4 x 5 - 5 4. / 4 = 13 x 5 -5 = 65-5 = 60/1 My ans 60. 1 Answer key does not show 60 as a possible answer. Please show how to solve this prob. thanks Click to expand... Cher85, what you started with is (correct me if I'm wrong): \(\displaystyle \dfrac{3^2 \ + \ 2^2 \cdot 5 \ - \ \sqrt{5}}{8 \ - \ 4./2 + 2}\) (There might be a fraction bar immediate above that didn't show up.) You must use PEMDAS. For the numerator, as you typed, 9 + 4 X 5 - 5 will be treated as 9 + 20 - 5 Continue with that. And for the denominator, your next step is incorrect. Instead, 8 - 4./2 + 2 will become 8 - 2 + 2 Continue with that part. ----- As per PEMDAS, the multiplications and dividing (from left to right) take precedence over the additions and subtractions.
