#$&*
course mth 158
9/12 8:30
001. `* 1*********************************************
Question: * R.1.26 \ was R.1.14 (was R.1.6) Of the numbers in the set {-sqrt(2), pi + sqrt(2), 1 / 2 + 10.3} which are counting numbers, which are rational numbers, which are irrational numbers and which are real numbers?
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Your solution:
None of the numbers are counting numbers. 1/2 +10.3 are rational numbers. {-sprt(2)}, pi+sqrt(2) are irrational numbers.
confidence rating #$&*:
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3
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Self-critique Rating:
ok
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Question: * R.1.44 \ 32 (was R.1.24) Write in symbols: The product of 2 and x is the product of 4 and 6
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Your solution:
2*x = 4*6
confidence rating #$&*:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
3
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Self-critique Rating:
ok
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Question:
* R.1.62 \ 50 (was R.1.42) Explain how you evaluate the expression 2 - 5 * 4 - [ 6 * ( 3 - 4) ]
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Your solution:
2-5*4-[6*(3-4)]
2-5*4-[6*-1]
2-5*4+6
2-20+6
-12
confidence rating #$&*:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
3
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Question: * R.1.98 \ 80 (was R.1.72) Explain how you use the distributive property to remove the parentheses from the express (x-2)(x-4).
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Your solution:
(x-2)(x-4)
x(x-4) - 2(x-4)
x^2 - 4x - (2x -8)
x^2 - 4x - 2x + 8
x^2 - 6x + 8
confidence rating #$&*:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
3
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Self-critique Rating:
3
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Question:
* R.1.102 \ 86 (was R.1.78) Explain why (4+3) / (2+5) is not equal to 4/2 + 3/5.
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Your solution:
You have to follow the order of operation. (4+3) / (2+5)= 7/7=1
confidence rating #$&*:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
3"
Self-critique (if necessary):
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Self-critique rating:
3
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Question:
* R.1.102 \ 86 (was R.1.78) Explain why (4+3) / (2+5) is not equal to 4/2 + 3/5.
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
Your solution:
You have to follow the order of operation. (4+3) / (2+5)= 7/7=1
confidence rating #$&*:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
3"
Self-critique (if necessary):
------------------------------------------------
Self-critique rating:
#*&!