AnswersPre-Algebra A-CRWriting and Evaluating Expressions

Writing and Evaluating Expressions Answers

17 verified answers2 views
1
Free Preview

StartFraction a Over 90 EndFraction

Question illustration
A
Write the expression as .
Option A
B
Write the expression as 90 – a.
C
Write the expression as a – 90.
D
Substitute 102 in for the variable, a.
E
Simplify by subtracting 90 from 102.
F
Simplify by dividing 102 by 90.
G
The answer is 1.13.
H
The answer is 12.
2
Free Preview

Question text not available

Answer not available
3

Question text not available

Answer not available
4

Question text not available

Answer not available
5

Question text not available

Answer not available
6

First, write the expression as . Second, 12.2 in for the variable, k. Third, by 3 and 12.2. The answer is

Answers:
Selection 1:3k
Selection 2:substitute
Selection 3:simplify
Selection 4:multiplying
Selection 5:36.6
7

Write and evaluate the expression. Then, select the correct answer. The sum of forty-five and a number; evaluate when n = 1.1

A
45n; when n = 1.1, the value is 49.5.
B
45 + n; when n = 1.1, the value is 46.1.
C
45 – n ; when n = 1.1, the value is 43.9.
D
; when n = 1.1, the value is 0.024.
Option D
8

The expression to model the situation is .

Answers:
Selection 1:d - 20
Selection 2:$15
9

The value of the expression when t = 32 degrees is degrees.

Answer:

64

10

StartFraction s Over 18 EndFraction

Question illustration
A
The expression is .
Option A
B
The expression is .
Option B
C
The expression is .
Option C
D
The expression is .
Option D
E
The answer is .
Option E
F
The answer is 6.
11

Question text not available

Answer not available
12

No, the student wrote a division expression instead of a subtraction expression.No, the student simplified the fraction incorrectly.No, the student made an error when substituting. Yes, the student’s work is correct.

A
No, the student wrote a division expression instead of a subtraction expression.
B
No, the student simplified the fraction incorrectly.
C
No, the student made an error when substituting.
D
Yes, the student’s work is correct.
13

Evaluate when h = 8.

Answer:

The expression for Adi's study time is h + 3. If Adi studied for h = 8 hours, then 8 + 3 = 11. Adi studied for a total of 11 hours.

14

Evaluate when b = 210.

Answer:

To evaluate the expression for the number of blueberries in each bowl, I identified the variable as b (the total number of blueberries), the operation as division, and the constant as 6. I wrote the expression as b/6. Substituting b = 210, I calculated 210 ÷ 6 = 35. Therefore, there are 35 blueberries in each bowl.

15

The value of the expression when d = $35 is .

Answer not available
16

Check any that you included in your response.

A
The variable is the number of hours Adi studied, the operation is addition, and the constant is 3.
B
You can write the expression as h + 3 or 3 + h.
C
To evaluate, substitute 8 in for the variable, h, and simplify.
D
8 plus 3 is 11. So Adi studied for 11 hours.
17

Check any that you included in your response.

A
The variable is the number of blueberries, the operation is division, and the constant is 6.
B
Write the division expression as the fraction, .
Option B
C
To evaluate, substitute 210 in for the variable, b, and simplify.
D
210 divided by 6 is 35.
E
So each bowl has 35 blueberries.

Did you find these answers helpful?

More from this Course

Assignment
18 verified answers

Writing and Evaluating Expressions

Assignment
18 verified answers

Writing and Evaluating Expressions

Assignment
14 verified answers

Writing and Evaluating Expressions