Answer:
45
Step-by-step explanation:
A number consists of 2 digits whose sum is 9 => x + y = 9
If the order of the numbers is inverted, the result is equal to the given number plus 9 units => (10*y + x) + 9 = (10*x + y)
Thus:
x + y = 9 => multiply by -9 => 9*y + 9*x = 81
10*y + x + 9 = 10*x + y => 9*y - 9*x = -9
We are left then that:
9*y + 9*x = 81 (1)
9*y - 9*x = -9 (2)
we add both equations
18y = 72
y = 72/18 = 4
replacing
x + y = 9
x + 4 = 9
x = 5
Therefore the number is (10y + x) => (10 * 4 + 5) => 45
All u have to do is subtract both of the temps and then u will have to answer
Answer:
3
Step-by-step explanation:
The ratio of adult dog to puppies is 3:2
There were 12 puppies that day
Number of adult puppies can be calculated as follows
= 3/2× 12
= 3 ×6
= 18
There were 15 adult dogs in the park on Tuesday
Hence the difference can be calculated as follows
= 18-15
= 3
Answer:
ill help
Step-by-step explanation:
(9,13) would be another point that the line passes through.
