Which of the following is a real-world problem that could be solved with the sum 102.50+(−39.95)?(1 point)
Responses
Nevaeh bought new headphones for $102.50. He then spent $39.95 on a new game. How much money did Nevaeh spend all together?
Nevaeh bought new headphones for $102.50. He then spent $39.95 on a new game. How much money did Nevaeh spend all together?
Nevaeh has $102.50 in his bank account. He then deposits $39.95 into his bank account. How much money does he now have in his bank account?
Nevaeh has $102.50 in his bank account. He then deposits $39.95 into his bank account. How much money does he now have in his bank account?
Nevaeh earned $102.50 last weekend. He then spent $39.95 on a new game. How much money from his weekend earnings does he have left?
Nevaeh earned $102.50 last weekend. He then spent $39.95 on a new game. How much money from his weekend earnings does he have left?
Nevaeh earned $102.50 last weekend. He then received $39.95 from his mom. How much money does he now have?
Nevaeh earned $102.50 last weekend. He then received $39.95 from his mom. How much money does he now have?
Nevaeh bought new headphones for $102.50. He then spent $39.95 on a new game. How much money did Nevaeh spend all together?
Solve the following problem:
It was 13°C yesterday, but the temperature changed by −18.6° overnight. What is the temperature now?(1 point)
The temperature now can be found by adding the change in temperature to the initial temperature.
Therefore, the temperature now is 13°C + (-18.6°C) = -5.6°C.
Use the additive inverse to find −492.89−(−871.78).
To find the expression −492.89 − (−871.78), we can rewrite it as −492.89 + 871.78.
Adding the two numbers gives us 378.89.
Therefore, −492.89 − (−871.78) = 378.89.
Determine the distance between −18.26 and −2.45 on a number line.(1 point)
Responses
20.71
20.71
−15.81
negative 15.81
−20.71
negative 20.71
15.81
15.81
To find the distance between -18.26 and -2.45 on a number line, we subtract the two values and take the absolute value of the result.
|-18.26 - (-2.45)| = |-18.26 + 2.45| = |-15.81| = 15.81
Therefore, the distance between -18.26 and -2.45 on a number line is 15.81.
Subtract 24−(−15).
Subtracting 24 - (-15) can be simplified by changing the subtraction of a negative number to addition.
24 - (-15) = 24 + 15
Adding 24 and 15, we get:
24 + 15 = 39
Therefore, the result of the subtraction 24 - (-15) is 39.
Which context describes a difference of rational numbers?(1 point)
Responses
The team’s score did not change during the game.
The team’s score did not change during the game.
A football player loses yards on a play.
A football player loses yards on a play.
A football player gains yards on a play.
A football player gains yards on a play.
The team’s score increased when scoring.
The team’s score increased when scoring.
A football player loses yards on a play.
Joey walked east for 1523 meters from home. Then, he walked west for 2134 meters. How far was Joey from home?(1 point)
Joey was
meters from home.
To determine how far Joey was from home, we need to subtract the distance he walked west (2134 meters) from the distance he walked east (1523 meters).
1523 meters - 2134 meters = -611 meters
Since Joey walked in opposite directions, we need to consider the negative sign. Thus, Joey was 611 meters away from home.
Which situation describes opposite quantities that when combined would equal 0?(1 point)
Responses
A plane ascends to 15,000 feet and then descends 15,000 feet. How many feet above the ground is the plane?
A plane ascends to 15,000 feet and then descends 15,000 feet. How many feet above the ground is the plane?
A plane ascends to 15,000 feet and then descends 10,000 feet. How many feet above the ground is the plane?
A plane ascends to 15,000 feet and then descends 10,000 feet. How many feet above the ground is the plane?
A plane ascends to 10,000 feet and then ascends 15,000 feet. How many feet above the ground is the plane?
A plane ascends to 10,000 feet and then ascends 15,000 feet. How many feet above the ground is the plane?
A plane ascends to 15,000 feet and then ascends 15,000 feet. How many feet above the ground is the plane?
A plane ascends to 15,000 feet and then descends 15,000 feet. How many feet above the ground is the plane?
Solve the following word problem. The air temperature at 9 a.m. is −5.8 degrees Celsius. The air temperature at noon is −1.6 degrees Celsius. What is the change in the temperature during these three hours? Write and solve an equation to show your answer. Then explain what your answer means.
To find the change in temperature during the three hours, we need to calculate the difference between the temperature at 9 a.m. and the temperature at noon.
Let's denote the change in temperature as ΔT.
The equation to represent this situation is:
ΔT = (-1.6) - (-5.8)
This simplifies to:
ΔT = -1.6 + 5.8
ΔT = 4.2
The change in temperature during these three hours is 4.2 degrees Celsius.
This means that the temperature increased by 4.2 degrees Celsius from 9 a.m. to noon.
What is 1749 + 59 − 8 − 10?(1 point)
Responses
20
20
−1
negative 1
0
0
−7