Asked by lemonlime🍋🦋

what is -4 5/11 - (2 4/11)? (1 point)
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what is -6 7/12 - 4 1/3?(1 point)
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what is 907.907 - 709.709?(1 point)
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what is 90.897 - 81.725?(1 point)
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what is 12 8/15 - 7 + 7/15 + 15? simplify your answer.(1 point)
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how should you group the following expressions to make it easiest to add?18 - 9 4/9 + 7/9 - 8(1 point)
A. (18 - 8 - 9)
B. (8 - 18) + (4/9 + 7/9)
C. (18 - 9 - 8) + (-4/9 + 7/9)
D. (18 - 8) + (-9 4/9 + 7/9)
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what should you do if a place value is missing a number?(1 point)
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what is -18.1 - 5?(1 point)
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what is -189.987 - 30.87?(1 point)
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mark had a balance of -$11 in his checking account. the bank charged a $25 fee. what is the balance in the account?(1 point)
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the water level of a river is below normal levels. its water level is at 1 1/2 meters below sea level. during the summer, the river drops another 2 1/3 meters below sea level. what is the water level at the end of summer? remember, the elevation is below sea level. account for this in your answer.(1 point)
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the rainfall in a town was 2.3 inches above normal in June. in July, the rainfall was 1.2 inches below normal. what was the difference in rainfall between the months?(1 point)
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a submarine was at a depth of 106.3 feet below sea level. after 5 hours, the sub was at 481.2 feet below sea level. how far did the sub travel?(1 point)
Answered by GPT 3.5
To subtract the mixed numbers -4 5/11 and 2 4/11, we first need to find a common denominator. The denominator in both numbers is 11, so we don't need to do anything.

To subtract the fractions, we subtract the numerators while keeping the denominator the same.

(-4 5/11) - (2 4/11) = (-4-2) + (5/11 - 4/11) = -6 + 1/11 = -6 1/11.

Therefore, the answer is -6 1/11.
Answered by GPT 3.5
To subtract the mixed numbers -6 7/12 and 4 1/3, we first need to find a common denominator. The denominator in 12 and 3 is 12.

Next, we need to convert the mixed numbers to improper fractions:

-6 7/12 = -75/12
4 1/3 = 13/3

Now, we can subtract the fractions:

(-75/12) - (13/3) = (-75/12) - (52/12) = -127/12

To simplify the answer, we can convert the improper fraction to a mixed number:

-127/12 = -10 7/12

Therefore, the answer is -10 7/12.
Answered by GPT 3.5
To subtract the decimals 907.907 and 709.709, we line up the decimals and subtract the numbers as if they were whole numbers:

907.907
- 709.709
_________
198.198

Therefore, the difference is 198.198.
Answered by GPT 3.5
To subtract the decimals 90.897 and 81.725, we line up the decimals and subtract the numbers as if they were whole numbers:

90.897
- 81.725
_________
9.172

Therefore, the difference is 9.172.
Answered by GPT 3.5
To solve the expression 12 8/15 - 7 + 7/15 + 15, we first need to convert the mixed number into an improper fraction:

12 8/15 = (12 * 15 + 8) / 15 = 188/15

Now, we can rewrite the expression:

188/15 - 7 + 7/15 + 15

To add or subtract fractions, we need to have a common denominator. The least common multiple of 15 and 1 is 15. So, let's convert all the fractions to have a denominator of 15:

(188/15) - (7 * 15/15) + (7/15) + (15 * 15/15)
= 188/15 - 105/15 + 7/15 + 225/15

Now, we can combine the fractions, keeping the denominator the same:

= (188 - 105 + 7 + 225) / 15
= 315 / 15

To simplify the expression further, we can divide the numerator and the denominator by their greatest common divisor, which is 15:

= 21 / 1

Therefore, the simplified answer is 21.
Answered by GPT 3.5
To make it easiest to add the expressions 18, -9 4/9, 7/9, and -8, we should group them in a way that simplifies the addition.

The expression can be grouped as:

C. (18 - 9 - 8) + (-4/9 + 7/9)

By grouping the terms this way, we first subtract 9 from 18 and then subtract 8 from the result. After that, we add the fractions -4/9 and 7/9. This allows us to perform each operation with smaller numbers and simpler fractions, making the addition easier.
Answered by GPT 3.5
If a place value is missing a number, you should fill it in with a zero. This ensures that there is a digit in every place value and maintains the correct value and position of the other digits in the number.
Answered by GPT 3.5
To subtract -18.1 and 5, we can write it as -18.1 + (-5) and then add the two numbers:

-18.1 + (-5) = -23.1

Therefore, the answer is -23.1.
Answered by GPT 3.5
To subtract -189.987 and 30.87, we can write it as -189.987 + (-30.87) and then add the two numbers:

-189.987 + (-30.87) = -220.857

Therefore, the answer is -220.857.
Answered by GPT 3.5
To find the balance in Mark's checking account, we start with his initial balance of -$11 and then subtract the bank fee of $25:

-$11 - $25 = -$36

Therefore, the balance in Mark's account is -$36.
Answered by GPT 3.5
To determine the water level at the end of summer, we need to add the two measurements of the drop in water level.

The first drop is 1 1/2 meters below sea level, and the second drop is another 2 1/3 meters below sea level.

To add the fractions, we need a common denominator of 2 or 3, which can be obtained by multiplying 2 and 3 to give us 6.

1 1/2 can be written as 3/2, and 2 1/3 can be written as 7/3.

Now, we add the fractions:

3/2 + 7/3

To add the fractions, we need a common denominator of 6:

(3/2)(3/3) + (7/3)(2/2)
= 9/6 + 14/6
= 23/6

Therefore, the water level at the end of summer is 23/6 meters below sea level.
Answered by GPT 3.5
To find the difference in rainfall between June and July, we need to subtract the rainfall in July from the rainfall in June.

The rainfall in June was 2.3 inches above normal, and the rainfall in July was 1.2 inches below normal.

To find the difference, we subtract the amount in July from the amount in June:

2.3 - 1.2 = 1.1

Therefore, the difference in rainfall between June and July is 1.1 inches.
Answered by GPT 3.5
To find out how far the submarine traveled, we need to subtract the initial depth from the final depth.

The initial depth is 106.3 feet below sea level, and the final depth is 481.2 feet below sea level.

To find the distance traveled, we subtract the initial depth from the final depth:

481.2 - 106.3 = 374.9

Therefore, the submarine traveled a distance of 374.9 feet.