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:
A complex number Z = A + Bi can be represented in the same way like we represent a point (a,b) in the coordinate plane.
Like in two dimensional coordinate system where there is X axis and Y Axis In complex plane , for locating real part of complex number we use X axis and for locating imaginary part we use Y axis.
So Complex number Z= 6 - 8 i = Point in the complex plane (6,-8)
6 = Real Part = Positive real number
-8 = Imaginary Part = Negative real number
Point (6,-8) will lie in Fourth Quadrant.
From the right triangle given, to obtain the unknown value we use the Trigonometry:
s/t
tan B=b/a
where:
B=15°
b=9
thus the value of a will be:
tan 15=9/a
solving for a we get:
a=9/tan 15
a=33.588~33.59
Answer: <span>33.59</span>
Answer:
$15.25
Step-by-step explanation:
1.58 x 5 = 7.90 + 0.80 = 8.70
7.90 / 2 = 3.95
20 - 8.70 = 11.30 + 3.95 = 15.25
(If this is wrong please tell me!)
The answer is D which is greater than 11 and less than 23.
<span>Sum of 2 sides of triangle is always greater than the third side.
And absolute difference of 2 sides of a triangle is always less than the 3rd side.
From that, 3rd side ia less than 6+17 = 23
and greater than 17-6=11.</span>