Posted by Miley on Monday, February 7, 2011 at 7:40pm.
Yuki made cookies on Monday. Some friends came over and ate half the cookies on Tuesday. On wednesday,Yuki ate three cookies, and on Thursday, she took two cookies to school. By Friday, Yuki had seven cookies left. How many did she bake on Monday?
Please i need help
- Math7 - helper, Monday, February 7, 2011 at 7:49pm
x = number of cookies
x - (1/2 x + 3 + 2) = 7
x - (1/2 x + 5) = 7
2/2 x - 1/2 x - 5 = 7
1/2 x - 5 = 7
1/2 x = 12
multiply both side by 2
x = 24
- Math7 - Miley, Monday, February 7, 2011 at 7:55pm
I did one exercise and could you please check it
The temperature at 2:00 P.M was 19C. By midnight, it was -3C
What is the difference in the temperatures?
I thing the answer is:
- Math7 - Miley, Monday, February 7, 2011 at 8:11pm
- Math7 - Ms. Sue, Monday, February 7, 2011 at 8:25pm
How can a difference between 19 and - 3 be only 3 degrees?
- Math7 - helper, Monday, February 7, 2011 at 8:25pm
From 19C to -3C is 22 degrees difference
- Math7 - Miley, Monday, February 7, 2011 at 8:46pm
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