OK. Here we go:
Step #1: Write the equation on your paper.
Step #2: Add 3 to each side of the equation.
Step #3: With the result of step-#2, divide each side of the equation by 2.
If your result of step-#3 is not 4.5, then go back to step-#1, and go through
all 3 steps again, trying to be more careful and focused.
Answer:
x= -12 & y=24
Step-by-step explanation:
given,
x+y=12.......... equation (i)
2x=3y........eq(ii)
let,
x=12-y.......eq(iii)
from eq(ii)
2(12-y)=3y
y=24
putting the value of y in eq(iii)
x=12-24
x= -12
Answer:
c
Step-by-step explanation:
Note there is a difference of 1 between consecutive integers.
let an integer be n then then the next one is n + 1 followed by n + 2
Hence
n + (n + 1) + (n + 2) = 36 → C
Antarctica , I think
Step-by-step explanation:
90 is not a square number because you cannot multiple two of the same number to get 90.
For example, 4 is a square number, because 2 x2 = 4
Likewise, 9 is a square number (3 x3), and 81 is a square number (9 x 9)