let's label each pump A, B, and C, just for convenience. A fills the tank by 1/50 every minute, B fills the tank by 1/60 every minute, and C drains it by 1/75 every minute. Now we can put them all into one function: t(1/50 + 1/60 - 1/75) = 1, where t = our time in minutes and 1 = the tank being full.
next, we solve for t: t = 300/7 minutes, or approximately 42.86 minutes.
The answer would be 9 because if you add one more 3rd to the number 6 that would be 3 so 3 * 3 = 9 there are 9 people in the book club
Answer:
30?
Step-by-step explanation:
Answer:
1) A and D
2) C and D
3) Angle Y > Angle Z
4) OM, ON, MN
5) least: 7 cm, greatest: 23 cm
Step-by-step explanation:
1) angle C > Angle A > Angle B
If the lenth is greater, angle opposite is greater
2) If the lenth is greater, angle opposite is greater
3) XY is opposite angle Z
XZ is opposite angle Y
XZ > XY,
So Angle Y > Angle Z
4) Angle O = 180-54-61 = 65
5) 15 - 8.5 < third side < 15 + 8.5
6.5 < third side < 23.5
Least: 7
Greatest: 23
