AnswersPre-Algebra A-CRExpressions with and without Parentheses

Expressions with and without Parentheses Answers

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Replace “a number” with the variable, n.The two operations are multiplication and addition.The two operations are multiplication and subtraction. The constants are 2 and 6.The expression is written as 2(n – 6).The expression is written as 2 × 6 – n.

A
Replace “a number” with the variable, n.
B
The two operations are multiplication and addition.
C
The two operations are multiplication and subtraction.
D
The constants are 2 and 6.
E
The expression is written as 2(n – 6).
F
The expression is written as 2 × 6 – n.
2
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evaluatesimplify✔ substitute

A
evaluate
B
simplify
C
✔ substitute
3

evaluate✔ simplifysubstitute

A
evaluate
B
✔ simplify
C
substitute
4

division✔ order of operationssubtraction

A
division
B
✔ order of operations
C
subtraction
5

7✔ 924106

A
7
B
✔ 9
C
24
D
106
6

Question text not available

Answers:
.:9 + 7n – 3
.:62
7

4 – 10/y + 8✔ 10/y – 4 + 8 4 – 10y + 810y – 4 + 8

Answers:
First, write the expression .:10/y – 4 + 8
Second, 2 in for the variable, y.:substitute
Third, by using .:simplify
Third, by using .:order of operations
The answer is .:9
8

10 × 7 + j; when j = 1, the value is 717(10 + j); when j = 1, the value is 7710(7 – j); when j = 1, the value is 6010(7 + j); when j = 1, the value is 80

A
10 × 7 + j; when j = 1, the value is 71
B
7(10 + j); when j = 1, the value is 77
C
10(7 – j); when j = 1, the value is 60
D
10(7 + j); when j = 1, the value is 80
10

Write and evaluate the expression.Check all that apply.

A
Write the expression as 11 +t2 -6
B
Write the expression as 11 +2t -6
C
Write the expression as 11 + -6
Option C
D
The value when t = 5 is 16.
E
The value when t = 5 is 30.
F
The value when t = 5 is 7.5.
12

Write and evaluate the expression. Then, select the correct answer. two less than the quotient of a number and four, increased by ten; evaluate when m = 12

A
2 + 4m -10, when m = 11, the value is 40
Option A
B
4m + 2 +10, when m = 11, the value is 60
Option B
C
2 - 4m + 10, when m = 12, the value is 9
Option C
D
-2+10, when m = 12, the value is 11
Option D

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