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mamaluj [8]
3 years ago
10

A stone is dropped into a well. A splash is heard after 5s. How deep is the well assuming sound travels instantaneously?

Mathematics
1 answer:
My name is Ann [436]3 years ago
5 0
Gravity pulls things at 9.8 m per second squared, so 9.8 times 5 would be 49 I believe.
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PLEASE HELP!!! I NEED HELP URGENTLY
kirill [66]

Answer:

You would click (1,-5)

Step-by-step explanation:

The absolute minimum is the lowest point of the graph.

In all graphs, if it says minimum, it almost certainly means that lowest point, and if there are more than one, you would simply click on those.

It does not matter how many points there are, only that they are the lowest.

Therefore, it would be 1,-5.

3 0
3 years ago
Read 2 more answers
A company charger shipping fee that is 4.5% of the purchase price for all items it ships. What is the fe to ship an item that co
kenny6666 [7]

Answer:

This is an percentage change question, by any chance you have a maths textbook, look for units that contains the topic: Percentage Change. Now, let's get solving! :)

Step-by-step explanation:

Firstly, you must multiply 4.5% with 56. That is: shipping fees x purchase price

That gives ($) 2.52 (this is your answer)

No addition/totaling needed as the question asked ONLY for the shipping fees.

Stay safe and Merry Christmas! :)

3 0
3 years ago
You have $250,000 in an IRA individual Retirement Account at the time you retire. You have the option this money in two funds: F
love history [14]
So to start off with this problem, let us call the amount invested in Plan A and B as a and b respectively.

So equation 1: a + b = 250,000

Next, we need to get an equation which is equal to 10,000. So the interest rate in plan a + interest rate in plan b would be equal to 10,000. Rewriting this sentence will give us:

Equation 2: .028a + 0.078b = 10,000

Rewrite the first equation into a = 250,000 - b, and then plug the value into equation 2.

.028(250,000 - b) + 0.078b = 10,000

7,000 - 0.028b + 0.078b = 10,000
-0.028b + 0.078b = 10,000 - 7,000
0.05b = 3,000
b = $60000 amount invested at 2.8% while 
250,000 - 60,000 = $190,000 is the amount invested at 7.8%

3 0
3 years ago
The next term of the square 3 by 1​
nadya68 [22]

9514 1404 393

Answer:

  (B)  1/27

Step-by-step explanation:

The terms of the sequence have a common ratio.

  (1/8)/(3/16) = (2/16)/(3/16) = 2/3

  (1/12)/(1/8) = (2/24)/(3/24) = 2/3

  (1/18)/(1/12) = 12/18 = 2/3

The next term will be ...

  (1/18)(2/3) = 2/54 = 1/27 . . . . matches choice B

5 0
3 years ago
The number of rows in an auditorium can be represented by the function f(x) = 80x. The number of seats in each row can be repres
rusak2 [61]

Answer:

h(x) = 80x^2 + 560x

Step-by-step explanation:

To find the function h(x), that represents the total number of seats, we just need to multiply the functions f(x) (number of rows) and g(x) (number of seats per row):

h(x) = f(x) * g(x)

h(x) = 80x * (x+7)

h(x) = 80x*x + 80x*7

h(x) = 80x^2 + 560x

So the function that represents the total number of seats is:

h(x) = 80x^2 + 560x

4 0
4 years ago
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