Subtract -7.1 - (8.3)= -1.2 ?
multiply (7.6)(1)(-6)=7.6 ?
divide 90/18=5 ?
find the reciprocal of 1/3(9-4)=3/5?
subtract 7/9-(13/18=-1/18?
"Subtract -7.1 - (8.3)= -1.2 ?"
Incorrect.
Draw the number line:
-7.1 is 7.1 to the left of 0.
-8.3 is 8.3 to the left of -7.1.
So -7.1-8.3 is 15.4 to the left of 0, which makes -15.4.
"multiply (7.6)(1)(-6)=7.6 ?"
Incorrect.
In a multiplication, if the number of negative numbers is odd, the result is negative.
"divide 90/18=5 ?"
correct
"find the reciprocal of 1/3(9-4)=3/5?"
If what you mean is (1/3)(9-4), 3/5 is correct.
"subtract 7/9-(13/18=-1/18? "
Incorrect.
7/9-13/18
=14/18 - 13/18
=1/18
Thank you for assisting me :)
You're welcome!
I hope you understood how you could get the right answer!
To subtract -7.1 from -8.3, you can think of it as adding the additive inverse of -7.1 to -8.3. The additive inverse of a number is the number that, when added to the original number, results in a sum of zero. In this case, the additive inverse of -7.1 is 7.1. So, the calculation would be:
-8.3 + 7.1 = -1.2
To multiply 7.6 by 1 and then by -6, you can simply apply the multiplication operation one after the other. The calculation would be:
7.6 * 1 * -6 = -45.6
To divide 90 by 18, you can perform the division operation by dividing the numerator (90) by the denominator (18). The calculation would be:
90 / 18 = 5
To find the reciprocal of 1/3 multiplied by the result of 9 minus 4, you first simplify the expression within the parentheses:
9 - 4 = 5
Then, you multiply 1/3 by 5:
1/3 * 5 = 5/3
Finally, to find the reciprocal, you take the reciprocal of 5/3 by flipping the numerator and denominator:
Reciprocal of 5/3 = 3/5
To subtract 7/9 from 13/18, you first find a common denominator, which is the least common multiple of 9 and 18, which is 18. Then, you convert both fractions so that they have the same denominator:
(7/9)(2/2) = 14/18
13/18
Now, you can subtract the two fractions:
14/18 - 13/18 = 1/18
Therefore, the answer is 1/18, not -1/18.