Anna is evaluating some rational expressions. Which THREE are correct?

Question

Responses
A 152 − 200 = −48152 − 200 = −48

B −25 + (−25) = 0−25 + (−25) = 0

C 89 − (−17) = 10689 − (−17) = 106

D 134 − (−16) = 118134 − (−16) = 118

E −39 − (−28) = −11

Answer 1

The three correct rational expressions are:

C 89 − (−17) = 106
D 134 − (−16) = 118
E −39 − (−28) = −11

Answer 2

What is 4−1 1/4+1/2

Answer 3

To evaluate the expression 4−1 1/4+1/2, we need to simplify it step by step.

First, let's convert 1 1/4 into an improper fraction:

1 1/4 = (4 * 1) + 1 / 4 = 5/4

Now, the expression becomes:

4 - 5/4 + 1/2

To add these fractions, we need to have a common denominator, which is 4:

4 - (5/4)*1 - (1/2)*(2/2)
4 - 5/4 - 2/4

Now we can subtract the fractions:

4 - 7/4

To simplify this further, we need to find a common denominator for 4 and the fraction 7/4, which is also 4:

16/4 - 7/4

Now we can subtract the numerators:

(16 - 7) / 4 = 9/4

So, 4−1 1/4+1/2 simplifies to 9/4 or 2 1/4.

Answer 4

Evaluate this expression.

−86.4 + 16.38.

Answer 5

To evaluate the expression -86.4 + 16.38, we simply need to add the two numbers together:

-86.4 + 16.38 = -69.02

So, the evaluated expression is -69.02.

Answer 6

Evaluate this expression.

−86.4 + 16.38.

A −70.02−70.02

B −69.64−69.64

C 102.78102.78

D 122.42122.42

Answer 7

To evaluate the expression −86.4 + 16.38, you need to add the two numbers together.

-86.4 + 16.38 = -70.02

So the correct option is A. -70.02.

Answer 8

Find the sum..

−3/2+ 8/5

Answer 9

To find the sum of −3/2 + 8/5, we need to first find a common denominator.

The common denominator for 2 and 5 is 10.

Converting the fractions to have a common denominator:

−3/2 = −15/10

8/5 = 16/10

Now we can add the fractions:

−15/10 + 16/10 = 1/10

So, the sum of −3/2 + 8/5 is 1/10.

Answer 10

Evaluate this expression.

75.5 − 32.55

Answer 11

To evaluate the expression 75.5 − 32.55, we simply need to subtract the two numbers:

75.5 − 32.55 = 42.95

So, the evaluated expression is 42.95.