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Cerrena [4.2K]
3 years ago
8

When an object falls due to gravity on Earth, the acceleration is 9.8 m/s. A student drops a rock

Mathematics
1 answer:
Aneli [31]3 years ago
8 0

Answer:

29.4 m/s

Step-by-step explanation:

Use v = at with a = 9.8 m/s^2 and t = 3.00 sec

v = 9.8 * 3.00 = 29.4 m/s

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I need help with number 4
ZanzabumX [31]

Answer: 5

Step-by-step explanation:

Setting them equal (since both are equal to f(x)), we get:

-5x+8 = -17

-5x=-25

x=5

8 0
3 years ago
00:00
umka2103 [35]

Answer:

The answer is

7\pi

Step-by-step explanation:

just remember that the volume of a cylinder is

v = \pi  {r}^{2}h

8 0
3 years ago
A freshly prepared sample of curium-243 undergoes 3312 disintegrations per second. after 6.00 yr, the activity of the sample dec
Lerok [7]

I took the liberty of finding for the complete question. And here I believe that the problem asks for the half life of Curium. Assuming that the radioactive decay of Curium is of 1st order, therefore the rate equation is in the form of:

A = Ao e^(-kt)

where,

A = amount after t years = 2755

Ao = initial amount = 3312

k = rate constant

t = number of years passed = 6

 

Therefore the rate constant is:

2755/3312 = e^(-6k)

-6k = ln (2755/3312)

k = 0.0307/yr

 

The half life, t’, can be calculated using the formula:

t’ = ln 2 / k

Substituting the value of k:

t’ = ln 2 / 0.0307

t’ = 22.586 years

or

t’ = 22.6 years

4 0
4 years ago
$59.75 camera, 4% sales tax <br> please show in full detail
jek_recluse [69]

Answer:

The total cost would be: $62.14

Step-by-step explanation:

First convert the percent to a decimal, so since it is 4%, you move the decimal two places to the right, so it would be .04.

Next, multiply $59.75 x .04%.  This equals $2.39.

Then, take the product and add it to $59.75. So, $59.75 + $2.39.

This equals $62.14!

3 0
3 years ago
Rectangle ABCD is rotated by 90 degrees clockwise about the origin then translated 3 units left and 2 units down to form A'B'C'D
timurjin [86]

The length in units of the line segment A'B' in the resulting figure is the same as the length of line segment AB in the previous rectangle.

<h3>Translation of shapes in the Cartesian plane</h3>

Form the task content;

  • It follows that the initial rectangle A is only translated and hence, the size of each of its sides remains constant.

The translation which occurs on the rectangle only shifts the whole rectangle leftward and downward and hence, each line segment in the rectangle still retains its length.

Read more on translation in the Cartesian plane;

brainly.com/question/5471952

4 0
2 years ago
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