-12 + 4 = (1 point)

-8

- 12 + (- 15) =

-27

Add 1217
+ ( − 7 17
)

(1 point)
Responses

−1934
negative 19 over 34

−517
negative 5 over 17

−1917
negative 19 over 17

517

517

Add 12/17 + ( − 7/17)

(1 point)
Responses

−19/34

−5/17

−19/17

5/17

-5/17

3/4 + 1/6

To add 3/4 and 1/6, we need to find a common denominator. The smallest common multiple of 4 and 6 is 12.

Converting the fractions:
3/4 = 9/12
1/6 = 2/12

Now we can add them: 9/12 + 2/12 = 11/12

So, 3/4 + 1/6 = 11/12.

24 - (- 15) =

(1 point)

24 - (- 15) = 39

- 9 - (- 14) =

- 9 - (- 14) = -9 + 14 = 5

- 7/8 - (- 1/4)

To subtract fractions, we need to have a common denominator. The common denominator of 8 and 4 is 8.

Converting the fractions:
-7/8 = -14/16
-1/4 = -2/8

Now we can subtract: -14/16 - (-2/8) = -14/16 + 2/8 = -14/16 + 4/16 = -10/16

Simplifying the fraction: -10/16 = -5/8

So, -7/8 - (-1/4) = -5/8.

1 2/3 - 1/2

To subtract mixed numbers, we first need to convert them to improper fractions.

Converting mixed numbers:
1 2/3 = (1 * 3 + 2) / 3 = 5/3
1/2 stays the same

Now we can subtract: 5/3 - 1/2

To find a common denominator, we multiply the denominators: 3 * 2 = 6

Converting the fractions:
5/3 = 10/6
1/2 = 3/6

Now we can subtract: 10/6 - 3/6 = 7/6

So, 1 2/3 - 1/2 = 7/6.

10.82 + (-15.96) =

10.82 + (-15.96) = -5.14

Which situation describes opposite amounts that when combined would equal 0?

(1 point)
Responses

A plane ascends (goes up) to 15,000 feet then descends (goes down) 10,000 feet. How many feet above the ground is the plane?
A plane ascends (goes up) to 15,000 feet then descends (goes down) 10,000 feet. How many feet above the ground is the plane?

A plane ascends to 15,000 feet then ascends 15,000 feet. How many feet above the ground is the plane?
A plane ascends to 15,000 feet then ascends 15,000 feet. How many feet above the ground is the plane?

A plane ascends to 15,000 feet then descends 15,000 feet. How many feet above the ground is the plane?
A plane ascends to 15,000 feet then descends 15,000 feet. How many feet above the ground is the plane?

A plane ascends to 10,000 feet then ascends 15,000 feet. How many feet above the ground is the plane?

A plane ascends to 15,000 feet then descends 15,000 feet. How many feet above the ground is the plane?

Bridget has $75 in her checking account. She spends $250 on car repairs. How much money does she have in her checking account now? Choose the correct addition sentence and answer.

(1 point)
Responses

- 75 + 250, $175
- 75 + 250, $175

75 + (- 250), $175
75 + (- 250), $175

75 + (- 250), $- 175
75 + (- 250), $- 175

75 + 250, $325

75 + (-250), $-175

Solve the following word problem. The air temperature at 9:00am is - 5.8 degrees. The air temperature at 1:00pm is - 1.6 degrees. What is the change in the temperature? 1. Write the math problem that will give you the answer. 2. Give the answer with correct units. 3. Explain what your answer means (be sure you answer the question asked).

(3 points)

1. The math problem that will give us the change in temperature is: -1.6 - (-5.8)

2. The answer with correct units is: -1.6 - (-5.8) = 4.2 degrees.

3. The answer means that the temperature increased by 4.2 degrees between 9:00am and 1:00pm.