Question

Evaluate 4 1/2−2−5 2/3 Responses A –3 1/6 B 12 1/6 C 2 1/6 D –4 1/6
Answer
Evaluate this expression.

32 + (−72.1)
Answer
Simplify.

7.829 − 3.21
Responses
A 3.1273.127
B 4.2094.209
C 4.6194.619
D 11.039
Answer
Evaluate the numerical expression.

1/2 − (−3/4)

Responses
A 1/3

B 1/4

C 3/2

D 5/4

E 7/4
Answer
You are asked to find the sum by using fractions. Which expression could you use?
Responses
A 1/4− 1/2 + 1/2− 1/4+ 3/5+ 2/5
B 1/4− 1/4 + 1/2 − 1/4+ 3/5 + 2/5
C 1/4 − 1/2 + 1/2 − 1/4 + 4/5 + 2/5
D − 1/2 − 1/2 − 1/4 + 3/5 + 2/5
Answer
Find the sum.
Responses
A 0
B 1
C 1 1/2
D 1/2
Answer
Evaluate this expression.

75.5 − 32.55
Answer
The temperature in Antarctica at noon is 14°F. By 9:00PM, the temperature had dropped by 16.2 degrees. What was the temperature at 9:00PM?
Responses
A –2.2°F–2.2°F
B 2.2°F2.2°F
C –30.2°F–30.2°F
D 30.2°F
Answered by GPT 3.5
To evaluate 4 1/2 - 2 - 5 2/3, we need to simplify each term separately and then combine them.

First, let's simplify 4 1/2. To do this, we need to convert the mixed number 4 1/2 into an improper fraction.

4 1/2 = (4 * 2 + 1) / 2 = 9/2

Now, let's simplify 5 2/3.

5 2/3 = (5 * 3 + 2) / 3 = 17/3

Finally, let's simplify the expression 4 1/2 - 2 - 5 2/3 by substituting the simplified values into the expression.

9/2 - 2 - 17/3

To subtract the fractions, we need to find a common denominator, which in this case is 6.

9/2 = (9/2) * (3/3) = 27/6
17/3 = (17/3) * (2/2) = 34/6

Now, let's substitute these new fractions back into the expression:

27/6 - 12/6 - 34/6

Combining the fractions, we get:

(27 - 12 - 34) / 6 = -19/6

Therefore, the answer is -19/6, which can also be written as -3 1/6.

The correct response is A) -3 1/6.
Answered by GPT 3.5
To evaluate the expression 32 + (-72.1), we simply add the two numbers together.

32 + (-72.1) = -40.1

Therefore, the answer is -40.1.
Answered by GPT 3.5
To simplify 7.829 - 3.21, we subtract the two numbers.

7.829 - 3.21 = 4.619

Therefore, the correct response is C) 4.619.
Answered by GPT 3.5
To evaluate the expression 1/2 - (-3/4), we need to simplify each term separately and then subtract them.

To subtract fractions, we need to find a common denominator, which in this case is 4.

1/2 = 2/4

Now, let's simplify the expression:

2/4 - (-3/4)

To subtract fractions, we change the subtraction to addition and keep the second fraction the same while changing the sign:

2/4 + 3/4

Adding the fractions, we get:

(2+3)/4 = 5/4

Therefore, the answer is option D) 5/4.
Answered by GPT 3.5
To find the sum using fractions, we need to identify an expression with terms that can be added together.

Looking at the options:

A) 1/4 - 1/2 + 1/2 - 1/4 + 3/5 + 2/5
B) 1/4 - 1/4 + 1/2 - 1/4 + 3/5 + 2/5
C) 1/4 - 1/2 + 1/2 - 1/4 + 4/5 + 2/5
D) -1/2 - 1/2 - 1/4 + 3/5 + 2/5

Option B contains terms that can be added together:

1/4 + 1/2 - 1/4 + 3/5 + 2/5

Therefore, the expression we could use to find the sum using fractions is option B) 1/4 - 1/4 + 1/2 - 1/4 + 3/5 + 2/5.
Answered by GPT 3.5
To find the sum of the expression 1/4 - 1/4 + 1/2 - 1/4 + 3/5 + 2/5, we need to add the fractions together.

Combining like terms, we have:

(1/4 - 1/4 - 1/4) + (1/2 + 3/5 + 2/5)

The terms with the same denominators can be added:

(0) + (10/10 + 6/10 + 4/10)

Simplifying further, we have:

(0) + (20/10 + 10/10 + 4/10) = (34/10)

To reduce the fraction, we can simplify it to:

(34/10) = (17/5) = 3 2/5

Therefore, the sum is option C) 1 1/2.
Answered by GPT 3.5
To evaluate the expression 75.5 - 32.55, we simply subtract the two numbers.

75.5 - 32.55 = 42.95

Therefore, the answer is 42.95.
Answered by GPT 3.5
To find the temperature at 9:00 PM, we need to subtract the temperature drop of 16.2 degrees from the initial temperature of 14°F.

14°F - 16.2°F = -2.2°F

Therefore, the temperature at 9:00 PM was -2.2°F.

The correct response is A) -2.2°F.