AnswersPre-Algebra - MA3119 A Distance LearningWriting and Evaluating Expressions

Writing Equations to Find Unknowns Answers

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Which statement about equations and expressions is true?

A
An example of an equation is because it shows that two expressions are equal.
Option A
B
An example of an expression is because it shows that two equations are equal.
Option B
C
An example of an equation is because it is a mathematical phrase represented by numbers, a variable, and operations.
Option C
D
An example of an expression is because it is a mathematical phrase represented by numbers, a variable, and operations.
Option D
3

LaTricia wrote a sentence as an equation.Twelve is the product of three and a number.Which statement best describes LaTricia’s work?

Question illustration
A
LaTricia is not correct. The word product does mean to multiply, but 12 should be the product and 3 should be one of the factors.
B
LaTricia is not correct. The equation should show that 12 times 3 equals w.
C
LaTricia is correct. The word product means to multiply and the equation uses multiplication.
D
LaTricia is correct. The sentence and the equation both contain 12 and 3 in the same order.
4

Which equation has a solution of ?

Question illustration
A
x + 3 = 10
Option A
B
x minus 10 = 3
Option B
C
StartFraction x Over 2 EndFraction = 26
Option C
D
x + 12 = 1
Option D
5

Collin did the work to see if 10 is a solution to the equation .Is 10 a solution to the equation?

Question illustration
A
Yes, because 10 and 4 are both even.
B
Yes, because if you substitute 10 for r in the equation and simplify, you find that the equation is true.
C
No, because 10 is not divisable by 4.
D
No, because if you substitute 10 for r in the equation and simplify, you find that the equation is not true.
6

Which equation represents “the product of a number and 24 is 72”?

A
24 p = 72
Option A
B
24 = 72 p
Option B
C
(24) (72) = p
Option C
D
StartFraction p Over 24 EndFraction = 72
Option D
7

What is the solution to the equation ?

Question illustration
A
m = 10
Option A
B
m = 50
Option B
C
m = 66
Option C
D
m = 360
Option D
8

For which equations is 8 a solution? Select the four correct answers.

A
x + 6 = 2
Option A
B
x + 2 = 10
Option B
C
x minus 4 = 4
Option C
D
x minus 2 = 10
Option D
E
2 x = 4
Option E
F
3 x = 24
Option F
G
StartFraction x Over 2 EndFraction = 16
Option G
H
StartFraction x Over 8 EndFraction = 1
Option H
9

Which are equations? Check all that apply.

A
x + 3 = 12
Option A
B
StartFraction z Over 7 EndFraction + 1
Option B
C
25 minus q
Option C
D
6 g = 18
Option D
E
Two-thirds m
Option E
F
StartFraction p Over 3.5 EndFraction = 2.25
Option F
G
9 = 100 minus f
Option G
H
k divided by 5.8
Option H
10

Which phrase is usually associated with addition?

A
the difference of two numbers
B
triple a number
C
half of a number
D
the total of two numbers

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