Answer:
a. 5cm
Step-by-step explanation:
r. m+m+n+n= 34
t. m+n+n+1=30
r. 2m + 2n =34
t. m + 2n + 1 = 30
after multiple by negative t row
t. -m -2n -1 = -30
and combine the 2 rows
2m -m +2n - 2n -1 = 34 - 30
m - 1 = 4
and we add one to each side of the operation
m - 1 + 1 = 4 + 1
m = 5
35 is an odd number and word form thirty five expanded form 30+5 and standard form 35
X-2y+z=3
2x+y-2z=31
-x+2y+3z=-23
multiply the first equation by -2 and add the results to the second equation:
x-2y+z=3
+5y-4z=25
-x+2y+3z=-23
multiply the first equation by 1 and the results to the third equation:
x-2y+z=3
5y-4z=25
4z=-20
solve for z:
4z=-20
z=-5
solve for y:
5y-4z=25,z=-5
5y-(4*-5)=25
5y+20=25
5y+20-20=25-20
5y=5
y=1
solve for x by substituted y and z into the first equation:
x-2y+z=3, y=1, z=-5
x-(2*1)-5=3
x-2-5=3
x-7=3
x-7+7=3+7
x=10
the answer are x=10, y=1, z=-5
Assuming you are trying to find the value of p:
You would add 1 to each side to make the p alone
-2 =p - 1
+1 +1
-1 = p
To check, you can put p in the original equation
-2 = -1 - 1
-2 = -2 which means this is correct
Hope this helps! If you can, please give brainlist! :)
The stamp book has room for 54
She already has 38 and you want to fill it.
38 + s= 54 so choice c
