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Mathematics, 30.09.2019 00:00 aaronlikly
Question 1(multiple choice worth 1 points)
(06.07 hc)
which expression is equivalent to 5x − 2x + 6 and why?
5x + 4, because 5x − (2x − 6) = 5x + 4
13x, because 5x − 2x + 6 = 5x + 8 = 13x
6 + 3x, because (5x − 2x) + 6 = 3x + 6 = 6 + 3x
9x, because 5x − 2x + 6 = 3x + 6 = 9x
question 2(multiple choice worth 1 points)
(06.07 mc)
four expressions are shown:
6(5x + 3)
6(6x + 2)
36x + 12
30x + 18
which two expressions are equivalent to 6(5x + 2 + x)?
a and b
b and d
a and d
b and c
question 3(multiple choice worth 1 points)
(06.06 lc)
which expression is equal to p + (m + n)?
pm + n
(p + m) + n
(p + m) ⋅ n
p + mn
question 4(multiple choice worth 1 points)
(06.03 mc)
which of the following best describes the expression 11(x + 7)?
the sum of constant factors 11 and x + 7
the product of constant factors 11 and x + 7
the sum of a constant factor 11 and a 2-term factor x + 7
the product of a constant factor 11 and a 2-term factor x + 7
question 5(multiple choice worth 1 points)
(06.04 mc)
the equation below shows the total volume (v), in cubic units, of 6 identical boxes with each side equal to s units:
v = 6s3
if s = 3.1 units, what is the value of v?
111.6 cubic units
178.746 cubic units
554.113 cubic units
669.6 cubic units
question 6(multiple choice worth 1 points)
(06.06 mc)
a student attempted to generate an equivalent expression using the distributive property, as shown below:
7(y − 5) = y − 35
what was the mistake made?
7 was not multiplied by y
7 was not multiplied by 5
incorrect sign was used for the first term
incorrect sign was used for the second term
question 7(multiple choice worth 1 points)
(06.02 lc)
which expression represents "5 times the sum of 4 and y? "
5 ⋅ 4 + y
5(4 + y)
4 + 5 ⋅ y
4(5 + y)
question 8 (fill-in-the-blank worth 1 points)
(06.04 lc)
if s = 1 over 2 unit and a = 16s2, what is the value of a, in square units? square unit(s). (input whole number only.)
numerical answers expected!
answer for blank 1:
question 9(multiple choice worth 1 points)
(06.06 lc)
which of these shows 2s + 8 rewritten using the commutative property of addition?
8s + 2
8s − 2
8 + 2s
8 − 2s
question 10(multiple choice worth 1 points)
(06.04 mc)
what is the value of fraction 1 over 2x3 + 5.3y, when x = 2 and y = 3?
8.3
9.3
18.9
19.9
question 11(multiple choice worth 1 points)
(06.02 lc)
what best describes the expression y over 7?
7 times some number
some number minus 7
7 more than some number
some number divided by 7
question 12(multiple choice worth 1 points)
(06.01 mc)
what is the value of the expression 11 − (fraction 1 over 2)4 ⋅ 48?
3
5
8
9
question 13(multiple choice worth 1 points)
(06.03 lc)
what is the coefficient of y in the expression 1 ⋅ 2 + 6y?
1
2
6
8
question 14(multiple choice worth 1 points)
(06.01 mc)
what is the value of the expression shown below?
3 + (10 − 2)2 ÷ 4 ⋅ 1 over 2 whole to the power of 4
2
4
16
19
question 15(multiple choice worth 1 points)
(06.03 lc)
what is the constant term in the expression 4xy + 3x2y + x + 2?
4
3
2
1
question 16(multiple choice worth 1 points)
(06.07 lc)
which expression is equivalent to 4s + 4s?
16s
8s
8 + 2s
16s2
question 17 (fill-in-the-blank worth 1 points)
(06.01 lc)
the value of 34 + 6 ⋅ 5 =
numerical answers expected!
answer for blank 1:
64
question 18(multiple choice worth 1 points)
(06.02 mc)
which of these is the algebraic expression for "6 less than 5 times some number? "
6n − 5
5n − 6
5 − 6n
6 − 5n
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Answers: 2
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Question 1(multiple choice worth 1 points)
(06.07 hc)
which expression is equivale...
(06.07 hc)
which expression is equivale...
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