i have 5 questions about adding rational numbers and want you to check my answers. tank you for reviewing my questions tutors
1. -3/2 - 7/4 + 1/8
my answer: -.3375
2. Alex borrowed $12.50 from his friend Danilo. He paid him back $8.75. How much does he still owe?
my answer: Alex owes Danilo $3.75
3. A football team gains 18 yards in one play and then loses 12 yards in the next. What is the team's total yardage?
my answer: The team's total yardage is 6 yards
4. Dee Dee bought an apple for $0.85, a sandwich for $4.50, and a bottle of water for $1.50. How much did Dee Dee spend?
my answer: Dee Dee spent $6.50
5. Andre went hiking near his house. The first trail he hiked on took him 4.5 miles away from his house. The second trail he hiked took him 2.4 miles closer to his house. The third trail took him 1.7 miles further away from his house. After Andre hiked the three trails, how far from his house was he?
my answer: After the three trails, Andre was 3.8 miles far from his house
tank you tutors for checking my answers. if i have any errors then please correct, tank you very much
-3/2 - 7/4 + 1/8
-12/8 - 14/8 + 1/8 = -25/8 = -3 1/8 = -3.125
2 and 3 are right.
4 is wrong
5 is right
tank you very much ms. sue for checking my work ! much appreciated
1. Let's check your answer for the first question:
To add rational numbers, we need to find a common denominator. In this case, we can use 8 as the common denominator. Now let's add the fractions:
-3/2 - 7/4 + 1/8 = -12/8 - 14/8 + 1/8 = -25/8.
So, the correct answer is -25/8, not -0.3375.
2. To find out how much Alex still owes, we need to subtract the amount he paid back from the amount he borrowed.
$12.50 - $8.75 = $3.75.
So, your answer is correct. Alex still owes Danilo $3.75.
3. To find the team's total yardage, we need to subtract the amount the team lost from the amount they gained.
18 yards - 12 yards = 6 yards.
So, your answer is correct. The team's total yardage is 6 yards.
4. To find out how much Dee Dee spent, we need to add up the prices of the apple, sandwich, and bottle of water.
$0.85 + $4.50 + $1.50 = $6.85.
So, your answer is incorrect. Dee Dee spent $6.85, not $6.50.
5. To find out how far Andre was from his house after the three trails, we need to add up the distances he traveled.
4.5 miles - 2.4 miles + 1.7 miles = 3.8 miles.
So, your answer is correct. After hiking the three trails, Andre was 3.8 miles from his house.
In summary, you have two incorrect answers:
- For question 1, the correct answer is -25/8.
- For question 4, the correct answer is $6.85.
I hope this helps! Let me know if you have any further questions.