Answer:
There are 650 cannonballs
Step-by-step explanation:
If you look closely in the picture, you can see that:
- 1st row has 1 ball
- 2nd row has 4 balls
- 3rd row has 9 balls
- 4th row has 16 balls
etc. etc.
We can see that the number of balls is the square of the row number. There are a total of 12 rows. So, rest of the rows has:
- 5th row has 25 balls
- 6th row has 36 balls
- 7th row has 49 balls
- 8th row has 64 balls
- 9th row has 81 balls
- 10th row has 100 balls
- 11th row has 121 balls
- 12th row has 144 balls
If we add up all those, we get total number of balls:
There are 650 cannonballs
Answer:
x=2
Step-by-step explanation:
first distribute the 1/2
1/2x - 5=-4
then add 5 to both sides
1/2x=1
multiple by 2 on both sides
x=2
Answer:
M is equal to blank and blank should be the sqaure root
Answer:
x = 5, -5, 4i, -4i ;
Step-by-step explanation:
assume
Now the above equation is a quadratic equation.
There are two solutions of any quadratic equation. Solution of a quadratic equation is given by:
similarly there are two solutions of the quadratic equation which are:
Since
Therefore
; where (the numbers with 'i' are called imaginary numbers)
Therefore
The answer is A.
The 4 and 7 with the object in the middle that I forgot the name of