If it's UK coins then the denominations less than 50p are:
1p; 2p; 5p; 10p; 20p
You lost a minus sign in there Mathaholic!
Not quite Guest!
SOH Sine = Opposite/Hypotenuse
CAH Cosine = Adjacent/Hypotenuse
TOA Tangent = Opposite/Adjacent
Substitute the value for x back into the first equation to find y:
y = 21 + 2*2/3
\(y=22\frac{1}{3}\)
y=21+2x
5x+2y=48
Substitute for y in the second equation using the first equation:
5x + 2(21 + 2x) = 48
5x + 42 + 4x = 48
9x + 42 = 48
9x = 6
x = 6/9
x = 2/3
See below:
.
Volume of square based pyramid = s^2*h/3 where s is the side length and h is the height. Here s^2 = 3 sq inches and h = 4 inches
Volume of 1 pyramid = 3*4 cubic inches = 12 cubic inches
Hence largest number of possible pyramids: 576/12 = 48
r = k/b^2 where k is a constant.
Find k from: 4 = k/20^2 so k = 4*20^2 = 1600
When there are 4 blues: r = 1600/4^2 or r = 1600/16, so r = 100
Press the 2nd button, then choose acos (which is inverse cosine).
Here's an example:
Enter:
then press = to get:
+33667 
