I'll just factor the above equation.
x² + 18x + 80
x² ⇒ x * x
80
can be:
1 x 80
2 x 40
4 x 20
5 x 16
8 x 10 Correct pair
(x+8)(x+10)
x(x+10) +8(x+10) ⇒ x² + 10x + 8x + 80 = x² + 18x + 80
x+8 = 0
x = -8
x+10 = 0
x = -10
x = -8
(-8)² + 18(-8) + 80 = 0
64 - 144 + 80 = 0
144 - 144 = 0
0 = 0
(-10)² + 18(-10) + 80 = 0
100 - 180 + 80 = 0
180 - 180 = 0
0 = 0
I think the algebra tiles will not be a good tool to use to factor the quadratic equation because the equation is not a perfect square quadratic equation.
To go from 8 floors underground to 14 floors above ground, you have to go up 22 floors. To go from -8 degrees to +14 degrees, you have to go up 22 degrees.
Answer:
To the nearest hundredth, the rate of flow will be 75.38 mm/hr
Step-by-step explanation:
Here in this case, we are to express the rate at which the water flow and round it up to the nearest hundredth.
We are told that water flows through the pipe at a rate of 490 mm every 6.5 hours.
Now, the rate will be 490/6.5 = 75.384615384615 mm/hr
Rounding this value to the nearest hundredth, we have 75.38 mm/hr
Answer:
2144
formula us v = 3/4 × pi × half of the diameter (radius)
