Answer:
-2x-7y=-4
Step-by-step explanation:
We want to add the two expressions
![\begin{aligned} 5x-9y &= 1 \\ -7x+2y &= -5 \end{aligned}](https://tex.z-dn.net/?f=%5Cbegin%7Baligned%7D%205x-9y%20%26%3D%201%20%5C%5C%20-7x%2B2y%20%26%3D%20-5%20%5Cend%7Baligned%7D)
First we add the Left Hand Sides and do the same to the Right Hand Sides. This gives us:
(5x-9y)+(-7x+2y)= 1 +( -5)
Open the brackets
5x-9y-7x+2y=1-5
Regroup like terms
5x-7x-9y+2y=-4
-2x-7y=-4
The result of adding the two given expressions is -2x-7y=-4.
<span>Show
the expanded form of 4.875 inches in fraction
Since 4.875 is a decimal number, with a whole number and a decimal number, we
need to convert it to fraction first
=> 4 = 4/1
=> .875 = 875/1 000 , because 8 is tenths, 7 has a place value of hundredths
and 5 has a place value of thousandths, that’s why it is over 1 000
Now, the expanded form of the given number is this:
=> 4/1 + 875/1 000
</span>
Answer:
0.07525 kilometers
Step-by-step explanation:
1 millimeter = 1 / 1000 meters
250 millimeters
= 250 / 1000
= 0.25 meters
75 meters 250 millimeters
= 75 + 0.25
= 75.25 meters
1 meter = 1 / 1000 kilometers
75.25 meters
= 75.25 / 1000
= 0.07525 kilometers