Answer:
42 cm
Step-by-step explanation:
The radius is always exactly half of the diameter.
63 red marbles.
Because the probability of drawing a red marble is 7/8, the number of red marbles = 7/8 * 72
= 7 * 9
= 63.
You can replace u with -3 since u = -3. You should get something like this: -3 - 4(-3) + 3. This can be turned into -3 + 12 + 3, and subtracting negative numbers are the same as adding the positive version. -3 plus 12 is 9, and 9 plus 3 is 12. The final answer is 12. Hope this helps!
A = a+b/2 x h
Add sides a and b then divide by 2
After that multiply by the h