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Brrunno [24]
2 years ago
10

Ashley is the utilities manager at a paper mill. She's watching over one of her holding tanks. It takes 4/5 of an hour to fill 1

/2 the tank. At this rate, how many holding tanks will she fill in 1 hour?
Mathematics
1 answer:
Nady [450]2 years ago
4 0
(4/5) / (1/2) = x / 1
1/2x = 4/5
x = 4/5 * 2
x = 8/5 or 1 3/5 holding tanks
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adell [148]

Answer:

dh/dt = 0,07 ft/min

Step-by-step explanation:

The swimming pool has the shape of right circular cylinder, therefore its volume is

V(c) = π*x²*h

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We take differentiation on both sides of the equation to get:

dV/dt  =  π*x²*dh/dt

The rate of change in height of water in the pool, is independent of the height of the water, since the pool is a right crcular cylinder, and dV/dt is constant at 8 ft³/min.

Then:

8  = π*x²*dh/dt

dh/dt = 8 /  π*x²

dh/dt = 8/113,04

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7 0
2 years ago
The image shows a ray of light bending at the boundary of a glass block. According to a law of optics, = n, where n is a constan
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The formula for the light bend would be n1*sin i= n2 * sin r

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3 0
2 years ago
An aircraft travels with the wind for 120 miles in 0.75 of an hour. The return trip is flown against the wind and takes exactly
7nadin3 [17]
<span>n aircraft travels with the wind for 120 miles in 0.75 of an hour. The return trip is flown against the wind and takes exactly 1 hour.
Which system of linear equations represents x, the speed of the plane in miles per hour, and y, the speed of the wind in miles per hour? 
---
With wind DATA:
distance = 120 miles ; time = (3/4)hr ; rate = 120/(3/4) = 160 mph
----
Against wind DATA:
distance = 120 miles ; time = 1 hr ; rate = 120 mph
-----

Equation::
Let p be speed of the plane in still air
Let w be speed of the wind
==================================
With wind:: p + w = 160 mph
Against wind:: p - w = 120 mph
================================
</span>
4 0
2 years ago
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the trinomial x2 bx c factors to (x m)(x n). if b is negative and c is positive, what must be true about m and n?
galina1969 [7]

For c to be positive, and for b to be negative, m must be negative and n must be negative.


X^2 - bx + c = (x - m)(x - n).

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2 years ago
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Type the correct answer in each box. Spell all the words correctly, and use numerals instead of words for numbers. If necessary,
Morgarella [4.7K]

Answer:

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Step-by-step explanation:

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