find the sum A. 0 B. 1 C. 1 1/2 D. 1/2
The problem seems to be incomplete as there is no specific sum mentioned. Please provide more information or context in order for me to help you find the sum.
1/4-0.5+1/2- 0.25+3/5+0.4
To find the sum of the given numbers, we can add them all together:
1/4 - 0.5 + 1/2 - 0.25 + 3/5 + 0.4
To simplify the fractions, we need to find a common denominator:
1/4 = 5/20
1/2 = 10/20
3/5 = 12/20
Now we can add all the numbers together:
5/20 - 0.5 + 10/20 - 0.25 + 12/20 + 0.4
Combining the like terms, we get:
(5/20 + 10/20 + 12/20) - (0.5 + 0.25) + 0.4
Adding the numerators, we have:
(27/20) - (0.75) + 0.4
Now, let's simplify further:
27/20 - 3/4 + 0.4
To add the fractions, we need a common denominator:
27/20 = 81/60
3/4 = 45/60
Now we can add all the terms together:
81/60 - 45/60 + 0.4
Combining the fractions, we have:
(81/60 - 45/60) + 0.4
Now, subtracting the numerators:
36/60 + 0.4
Simplifying the fraction:
6/10 + 0.4
Adding the fractions:
(6/10 + 4/10)
Now, we have:
10/10
The sum of the given numbers is 10/10, which simplifies to 1.
Therefore, the answer is B. 1.
evaluate the numerical expression 1/2 - (-3/4)
To evaluate the expression 1/2 - (-3/4), we can simplify it as follows:
1/2 - (-3/4)
Since subtracting a negative number is the same as adding its positive counterpart, the expression becomes:
1/2 + 3/4
Now, in order to add the fractions, we need to find a common denominator:
1/2 = 2/4
Now, we can add the fractions:
2/4 + 3/4 = 5/4
Therefore, the evaluation of the expression 1/2 - (-3/4) is equal to 5/4.
Alternatively, we can also write it as a mixed number:
5/4 = 1 1/4
So, the result can also be expressed as 1 1/4.
In conclusion, the numerical expression 1/2 - (-3/4) evaluates to 5/4 or 1 1/4.
-2/17divided by -1/2
To divide fractions, we multiply the first fraction by the reciprocal of the second fraction. So, to solve -2/17 divided by -1/2, we can multiply -2/17 by -2/1:
-2/17 * -2/1
Multiplying the numerators and denominators, we have:
(-2 * -2) / (17 * 1) = 4/17
Therefore, -2/17 divided by -1/2 is equal to 4/17.