The number is = 10x+y
if reverse the digits, the number is: 10y+x
The sum fo its digits is = x+y=5
I suggest this system of equations:
(10y+x)-(10x+y)=27 ⇒9y-9x=27
x+y=5
We can solve this system of equations by equaliztion method
x=5-y
9y-9(5-y)=27
9y-45+9y=27
18y=27+45
18y=72
y=72/18
y=4
x=5-y
x=5-4=1
The number is: 10x+y=10(1)+4=14
Answer: the number is 14
Answer:
7 X 5
You use multiplacation to find the total number of blocks
They are not the same because one they dont get the same answer and one of the signs are different so it has changed the answer
20 is the estimate
22.12 is answer
Slope = Y2 - Y1 / X2 - X1
Slope =(3-5) / (-3-[-3])
Slope = -2 / 0
The answer is infinity because anything divided by 0 = infinity.
