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markusblazer
26.11.2019 •
Mathematics
80 points
question 1
3y; y+y+y
what is the result if you evaluate each expression for y=2?
they are both 6.
they are both 5.
one is 5, and the other is 6.
one is 5, and the other is 8.
question 3
2z+3z
choose the equivalent expression.
6z
5z
1z
5(z+1)
part 2
2z+3z
evaluate the expression when z=7.
question 4
consider the expressions 6x and 3(x+2).
evaluate each expression for x=2. what can you say about the expressions and results?
the expressions are not equivalent, but the answers are the same when x=2.
the expressions are not equivalent, and the answers are different when x=2.
the expressions are equivalent, but the answers are different when x=2.
the expressions are equivalent, and the answers are the same when x=2.
question 7
select all the statements that are true.
116b is equivalent to 16b.
14b+13b is equivalent to 27b.
13(b+7) is equivalent to 13b+73.
b+0.3+4b is equivalent to 5b+0.3.
question 8
select all the statements that explain why 7x+2x and 4x+5x both equal 18 when x=2.
both expressions simplify to 9x when like terms are combined.
both expressions simplify to 5x when like terms are combined.
expressions are equivalent, because 7x−2x=5x which is part of the second expression.
the expressions are equivalent, because when you combine like terms in each, the result is the same.
question 10
consider the expressions 2(x+2) and 2x+2.
evaluate each expression for x=4. what can you say about the expressions and results?
the expressions are equivalent, but the answers are different when x=4.
the expressions are equivalent, and the answers are the same when x=4.
the expressions are not equivalent, but the answers are the same when x=4.
the expressions are not equivalent, and the answers are different when x=4.
Solved
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Ответ:
Select the equivalent expression.
Step-by-step explanation:
Question 7
Select all the statements that are true.
___ 116b is equivalent to 16b.
___ 14b+13b is equivalent to 27b.
___ 13(b+7) is equivalent to 13b+73.
___ b+0.3+4b is equivalent to 5b+0.3.
Question 8
Select all the statements that explain why 7x+2x and 4x+5x both equal 18 when x=2.
___ Both expressions simplify to 9x when like terms are combined.
___ Both expressions simplify to 5x when like terms are combined.
___The expressions are equivalent, because 7x−2x=5x which is part of the second expression.
___ The expressions are equivalent, because when you combine like terms in each, the result is the same.
Question 10
Consider the expressions 2(x+2) and 2x+2.
Evaluate each expression for x=4. What can you say about the expressions and results?
The expressions are equivalent, but the answers are different when x=4.
The expressions are equivalent, and the answers are the same when x=4.
The expressions are not equivalent, but the answers are the same when x=4.
The expressions are not equivalent, and the answers are different when x=4.
Ответ: