Answer:
Step-by-step explanation:
Your total is 4 and each one is a individual (1)
so the probability of 1 ball would be :
because the question asks for the probability they are picked 4 times, we would need to multiply ¼ four times.
Suppose the one's digit is x, the ten's digit is y. the original number is 10y+x, the reversed number is 10x+y
x+y=13
(10x+y)=(10y+x)-9 =>9y-9x=9 =>y-x=1
Add the two equation to solve: 2y=14 =>y=7
x=13-7=6
the original number is 76.
Answer:
y=x
Step-by-step explanation:
As you can see from this graph, all of the x and y coordinates are the same, so it would only make sense for x and y to be equal.
Answer:
the total surface of the box is 486 cm 2
.......
Answer:
27, 38, and 51
Step-by-step explanation:
3, 6, 11, 18, ...
We increase the first number by 3. Then 5. Then 7.
The pattern is that the difference increases by 2.
That means this is a quadratic sequence.
y = x² + 2, where x = 1, 2, 3, etc.
The next three numbers are 27, 38, and 51.
