1. Use the formula: A = π x r^2
2. Find the radius.
3. Multiply the radius by itself to square it.
4. Multiply the result by pi.
5. Use the result as your answer.
9- because it looks like 12 and 15 were multiplied by 3,
3x5= 15
3x4= 12
3x3= 9
I think there are 16 students score less than 88 marks.
Function 1 | y-intercept of -1 | slope of 1
Function 2 | y-intercept of 1 | slope of -5
Function 3 | y-intercept of 5 | slope of -3
Function 4 | y-intercept of 2 | slope of 4
I have no idea which y-intercept is closest to 0 when 2 functions are 1 unit off.
Since the triangle is equilateral, all sides are equal. To find x, we can say that

Now simplify, and isolate x.

Therefore x=9.
Substitute x for 9 in one side.
2×9+6=18+6=24.
All sides are equal to 24 and x=9.