385=15n+85
385-85=15n
300=15n
300/15=n
20=n
22828.l of a period of 3 years.
Answer:
it means the middle of the points
Step-by-step explanation:
The Answer Is (A) because if you use Subtraction and Addition you will End up with the Sum.
The number is 42.
Let xy be the number. x is the tens digit, y is the units digit. The ratio of the units digit to the tens digit, y/x, is 1/2. This gives us the proportion
y/x = 1/2
The tens digit is 2 more than the units digit; x = y+2; substituting in our proportion we have
y/(y+2) = 1/2
Cross multiply:
y*2 = (y+2)*1
2y = y+2
Subtract y from each side:
2y - y = y+2-y
y = 2
x = y+2
x = 2+2
x =4
xy = 42
