Answer:
0u
7u
6u
2u
Step-by-step explanation:
All of these question are just a matter of adding like terms
For the first one we have
7u+(-u)+(-6u)
which is equal to
7u-u-6u
Which I'm sure you can see is equal to 0 or 0u
10/2u+2u
10/2u=5u
5u+2u=7u
6u+0u
0u=0
6u
6u+(-4u)
6u-4u
2u
V = 74.8933701m3 Hope this helps
Let's call the width of our rectangle and the length . We can say , since the length is equal to 4 cm greater than the width.
Also remember that the perimeter of a rectangle is the sum of two times the width and two times the length, or . To solve this problem, we can substitute in the information we know, as shown below:
Now, we can substitute in the width we found into the formula for length, which is :
The width of our rectangle is cm and the length of our rectangle is
Answer:
i think ans is 16.52271164
Answer:
x+2y= -10......eqn(i)
3x-y=12.........eqn(ii)
multiply the eqn(ii) by 2
x+2y= -10
6x-y=12
or, 7x=14
or, x=14/7
or, x=2
now, substituting the value of x=2 in eqn(i)
x+2y= -10
or, 2+2y= -10
or, 2y= -10-2
or, 2y= -12
or, y= -12/2
or, y= -6
therefore the equation is proved