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To solve the expression 7.829 - 3.21, you simply subtract 3.21 from 7.829.
7.829 - 3.21 = 4.619
Therefore, the result of 7.829 - 3.21 is 4.619.
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7.829-3.21
9 answers
Evaluate 4 1/2−2−5 2/3
Responses
a. -3 1/6
b. 12 1/6
c. 2 1/6
d. -4 1/6
Responses
a. -3 1/6
b. 12 1/6
c. 2 1/6
d. -4 1/6
To evaluate 4 1/2 - 2 - 5 2/3, we need to follow the order of operations (parentheses, exponents, multiplication and division from left to right, and addition and subtraction from left to right) and simplify each term before performing the subtraction.
First, let's simplify 4 1/2:
4 1/2 = 8/2 + 1/2 = 9/2
Next, let's convert 5 2/3 to an improper fraction:
5 2/3 = (5 * 3 + 2)/3 = 17/3
Now, we can substitute these values back into the expression:
9/2 - 2 - 17/3
To subtract these fractions and whole numbers, we need a common denominator. The least common multiple of 2 and 3 is 6.
Converting 9/2 to a fraction with a denominator of 6:
(9/2) * (3/3) = 27/6
Converting 17/3 to a fraction with a denominator of 6:
(17/3) * (2/2) = 34/6
Now we can substitute these new fractions back into the expression:
27/6 - 2 - 34/6
To subtract these fractions, we can combine the numerators over the common denominator:
(27 - 34)/6 = -7/6
Lastly, let's convert the improper fraction -7/6 back to a mixed number:
-7/6 = -1 1/6
Therefore, the value of 4 1/2 - 2 - 5 2/3 is -1 1/6.
Therefore, the correct answer is: a. -3 1/6.
First, let's simplify 4 1/2:
4 1/2 = 8/2 + 1/2 = 9/2
Next, let's convert 5 2/3 to an improper fraction:
5 2/3 = (5 * 3 + 2)/3 = 17/3
Now, we can substitute these values back into the expression:
9/2 - 2 - 17/3
To subtract these fractions and whole numbers, we need a common denominator. The least common multiple of 2 and 3 is 6.
Converting 9/2 to a fraction with a denominator of 6:
(9/2) * (3/3) = 27/6
Converting 17/3 to a fraction with a denominator of 6:
(17/3) * (2/2) = 34/6
Now we can substitute these new fractions back into the expression:
27/6 - 2 - 34/6
To subtract these fractions, we can combine the numerators over the common denominator:
(27 - 34)/6 = -7/6
Lastly, let's convert the improper fraction -7/6 back to a mixed number:
-7/6 = -1 1/6
Therefore, the value of 4 1/2 - 2 - 5 2/3 is -1 1/6.
Therefore, the correct answer is: a. -3 1/6.
Determine the value of the expression –5.45 + 4.12 –8.66.
Responses
A -9.99-9.99
B 18.2318.23
C –0.91–0.91
D –2.99
Responses
A -9.99-9.99
B 18.2318.23
C –0.91–0.91
D –2.99
To determine the value of the expression –5.45 + 4.12 – 8.66, you simply add and subtract the given values.
–5.45 + 4.12 – 8.66 = -9.99
Therefore, the value of the expression –5.45 + 4.12 – 8.66 is -9.99.
Therefore, the correct answer is: A. -9.99.
–5.45 + 4.12 – 8.66 = -9.99
Therefore, the value of the expression –5.45 + 4.12 – 8.66 is -9.99.
Therefore, the correct answer is: A. -9.99.
Evaluate this expression.
75.5 − 32.55
Responses
A 33.6533.65
B 41.6541.65
C 42.9542.95
D 108.05
75.5 − 32.55
Responses
A 33.6533.65
B 41.6541.65
C 42.9542.95
D 108.05
To evaluate the expression 75.5 - 32.55, you simply subtract 32.55 from 75.5.
75.5 - 32.55 = 42.95
Therefore, the value of the expression 75.5 - 32.55 is 42.95.
Therefore, the correct answer is: C. 42.95.
75.5 - 32.55 = 42.95
Therefore, the value of the expression 75.5 - 32.55 is 42.95.
Therefore, the correct answer is: C. 42.95.
he temperature in Antarctica at noon is 14°F. By 9:00PM, the temperature had dropped by 16.2 degrees. What was the temperature at 9:00PM?
Responses
A –2.2°F–2.2°F
B 2.2°F2.2°F
C –30.2°F–30.2°F
D 30.2°F
Responses
A –2.2°F–2.2°F
B 2.2°F2.2°F
C –30.2°F–30.2°F
D 30.2°F
To find the temperature at 9:00 PM, we need to subtract the drop of 16.2 degrees from the initial temperature of 14°F.
14°F - 16.2°F = -2.2°F
Therefore, the temperature at 9:00 PM was -2.2°F.
Therefore, the correct answer is: A. –2.2°F.
14°F - 16.2°F = -2.2°F
Therefore, the temperature at 9:00 PM was -2.2°F.
Therefore, the correct answer is: A. –2.2°F.