Is this correct??????

Mathematics

2 answers:

SSSSS [86.1K]3 years ago

8 0

Yup that’s correct!! -3+8=5 :D

nadezda [96]3 years ago

3 0

Answer:

yes, the Temperature is 5 F

Step-by-step explanation:

-3 + 8 = 5

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6 0

3 years ago

Water is leaking out of an inverted conical tank at a rate of 6,500 cm3/min at the same time that water is being pumped into the

Nana76 [90]

Answer:

285,753 cm³/min

Step-by-step explanation:

The rate of change of volume is the product of the water's surface area and its rate of change of depth.

At a depth of 2 m, the water has filled 1/3 of the 6 m depth of the tank. So, the radius at the water's surface will be 1/3 of the tank's radius of 2 m. The water's surface area is ...

A = πr² = π(2/3 m)² = 4π/9 m²

The rate of change of depth is 0.2 m/min, so the volume of water is increasing at the rate ...

dV/dt = (0.20 m/min)(4π/9 m²) = 8π/90 m³/min ≈ 279253 cm³/min

This change in volume is the difference between the rate at which water is being pumped in and the rate at which it is leaking out:

2.8×10⁵ cm³/min = (input rate) - 6500 cm³/min

Adding 6500 cm³/min to the equation, we get ...

input rate ≈ 285,753 cm³/min

4 0

4 years ago

Oil leaked from a tank at a rate of r(t) liters per hour. the rate decreased as time passed, and values of the rate at two hour

Galina-37 [17]

The given data is
t, h: 0 2 4 6 8 10
r(t), L/h: 8.6 7.9 6.8 6.4 5.7 5.3

The lower and upper estimates for the total amount that leaked may be computed as the Left and Right Riemann sums.

The shape of the graph of r versus will determine which of the two sums yields an upper or lower sum.
The plot of the graph is shown below.

The Left Riemann sum is
Sl = 2*(8.6+7.9+6.8+6.4+5.7) = 70.8 L

The Right Riemann sum is
Sr = 2*(7.9+6.8+6.4+5.7+5.3) = 64.2 L

Answer:
The lower estimate for oil leakage is 64.2 L
The upper estimate for oil leakage is 70.8 L