<span>Rate of pump A: 1/8 of a pool per hour
Rate of pump B: 1/9 of a pool per hour
Combined rate: 1/8+1/9 = 17/72 +1/9 = 25/72
So if they work together, the two pumps have a combined rate of 25/72 of a pool per hour (i.e in one hour, the two pumps will empty 25/72 of the pool)
</span><span>But we want to empty ONE pool (not 25/72 of one). So we need to multiply 25/72 by some number x to get 1.
</span>
<span>Now solve for x
x=2.88
</span><span>It will take the two pumps 2.88 hours to empty the pool.
2 hours 52 minutes 50 seconds</span>
Answer:
12.5cm
Step-by-step explanation:
This triangle is either isosceles or equilateral, we already know two sides.
the other side of the triangle is also 5 cm long because it is also the radius of the shape
the format for finding a right angle triangle like this one is base x height / 2
5 x 5 = 25
25/2 = 12.5
12.5 rounded is 13 because the decimal number is 5 and 5 or higher means we need to round up.
hopefully this helped
-cheesetoasty
Answer:
16 metres
Step-by-step explanation:
You're finding the perimetre of this rectangle, so have to add each side together to find the total distance he traveled (the perimetre of the rectangle, since he travelled in a rectangle).
3*2 is 6,
5*2 is 10
10 + 6 is 16.
Have a wonderful day, my friend.
f(x) = 3/(x + 2) - √x - 3
f(7) = 3/(7 + 2) - √7 - 3
f(7) = 3/9 - √4
f(7) = 0.333 - 2
f(7) = -1.67
Answer:
x= -7
Step-by-step explanation:
have a good day
