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3 years ago

the table below gives the average cost, x (to the nearest hundred) of tuition and fees, y, at a four year college

Mathematics

1 answer:

Ganezh [65]3 years ago

5 0

22
$476352nbvo$

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How many pieces of tape 5mm long can be cut from a piece 15cm long ?

hram777 [196]

Answer: The answer is 17 pieces is the answer..

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Step-by-step explanation:

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2 years ago

A bucket that weighs 6 lb and a rope of negligible weight are used to draw water from a well that is 80 ft deep. The bucket is f

zaharov [31]

Answer:

3200 ft-lb

Step-by-step explanation:

To answer this question, we need to find the force applied by the rope on the bucket at time $t$

At $t=0, the weight of the bucket is 6+36=42 \mathrm{lb}$

After $t$ seconds, the weight of the bucket is $42-0.15 t \mathrm{lb}$

Since the acceleration of the bucket is the force on the bucket by the rope is equal to the weight of the bucket.

If the upward direction is positive, the displacement after $t$ seconds is $x=1.5 t$

Since the well is 80 ft deep, the time to pull out the bucket is $\frac{80}{2}=40 \mathrm{~s}$

We are now ready to calculate the work done by the rope on the bucket.

Since the displacement and the force are in the same direction, we can write

$W=\int_{t=0}^{t=36} F d x$

Use $x=1.5 t$ and $F=42-0.15 t$

$W=\int_{0}^{36}(42-0.15 t)(1.5 d t)$

$=\int_{0}^{36} 63-0.225 t d t$

$=63 \cdot 36-0.2 \cdot 36^{2}-0=3200 \mathrm{ft} \cdot \mathrm{lb}$

$=\left[63 t-0.2 t^{2}\right]_{0}^{36}$

$W=3200 \mathrm{ft} \cdot \mathrm{lb}$

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2 years ago

Two angles in a triangle equal 20 and 130. What is the measure of the third angle?

mezya [45]

C because they all have to add up to 180 and 20+130=150 and 180-150=30

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3 years ago

Read 2 more answers

2. (01.07)<br> Simplify the given expression below: <br> (4 + 2) - (1 - 71)

Agata [3.3K]

(4+2)-(1-71)
6- -70
6+70
76

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2 years ago

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levacccp [35]

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