Wednesday
April 23, 2014

Homework Help: Math

Posted by Jasmine 20 on Friday, November 24, 2006 at 5:38pm.

Can someone correct it


Evaluate the following expressions numbers 3-4

3) [(2+3)^3-4(5)]+7
My way of solving:
[(5)^3-4(5)]+7
[123-4(5)]+7
[123-20]+7
[103]+7
My answer: 109

4) [25/ (2^3-3)]*2
My way of solving:
[25/(8-3)]*2
[25/5]*2
[5]*2
My answer:10


Thanks for showing your work. It helps us to know where you are having trouble.
#3. [(2+3)^3-4(5)]+7
My way of solving:
[(5)^3-4(5)]+7 You are ok to here.
[123-4(5)]+7 5*3 125 not 123.
[123-20]+7
[103]+7 a second mistake here. 103 + 7 = 110
My answer: 109 the correct answer is 112.

#4. [25/ (2^3-3)]*2
My way of solving:
[25/(8-3)]*2
[25/5]*2
[5]*2 You are ok to here. 5^2 = 25 and not 10.
My answer:10

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