All categories

3 years ago

Can someone help me with this and answer asap.

Mathematics

2 answers:

Ber [7]3 years ago

7 0

Answer:

Length of the pendulum will be 254 centimeters.

Step-by-step explanation:

In this question the formula to calculate the time period is given and we have to measure the length of new pendulum to be replaced with.

Formula is $T= 2\pi \sqrt\frac{L}{980}$ centimeters

Given parameters is T = 3.2 seconds

By putting the value of T in the formula

$3.2 = 2\pi \sqrt{\frac{L}{980} }$

$\frac{3.2}{2\pi } =\sqrt{\frac{L}{980} }$

$(\frac{1.6}{\pi })^{2} = \frac{L}{980}$

$L = (\frac{1.6}{\pi })^{2}(980) = \frac{2508.8}{(3.14)^{2} }$

L = 254 centimeters.

Karo-lina-s [1.5K]3 years ago

6 0

Answer:

Choice B is correct answer.

Step-by-step explanation:

We have given the time period of pendulum.

We have to find the the length of pendulum.

We have given the formula for time period of new pendulum.

T = 2π√L/980

Separating the length from above formula, we have

T² = 4π²(L/980)

980×T² = 4π²× L

L = 980T² / 4π²

Putting the given value of T, we have

L = 980(3.2)² / 4π²

L = 980(10.24) / 4π²

L = 254 centimeters

Hence, the length of new pendulum is 254 centimeters.

You might be interested in

What is the constant proportionality of 3/1 or three over one

vova2212 [387]

I need more info
Then that

8 0

3 years ago

which of the following statistical techniques can the psychologist use to determine the developmental score of a typical 4 year

anzhelika [568]

Your question is incomplete, as you have not listed the following statistical techniques.

But I wish to help you, with the correct answer, that is likely one of the option.

ANSWER : INFERENTIAL STATISTICS

Step-by-step explanation: Inferential statistics is a statistical inference, where conclusion is drawn using a set of data that are not gotten from the sample study, but are assumed to relate with the sample study. This type of statistics relies on a probability, that the assumed data used to analyze a sample can be used to study the properties of that sample.

Therefore, for a psychologist to determine the developmental score of a four year old child, without the child participating in the study, the psychologist is most likely to use the scores of other who as participated in the study, to infer as the same with the score of a four year old child.

5 0

3 years ago

1 Sole for x. Round your answer to the nearest tenth.*<br> 17<br> 6

BaLLatris [955]

Answer:

15.9

Step-by-step explanation:

Formula:

a² + b² = c²

6² + x² = 17²

36 + x² = 289

x² = 253

$\sqrt{x^2} =\sqrt{253}$

x = 15.91

5 0

3 years ago

Of the total runs made by Indian team during a cricket match Sachin scored 44% and dhoni scored 39% if Sachin scored 30 runs mor

kramer

Answer:

difference in percentage = 44-39=5%

difference in number =30

let total number of run by team be x

5% 0f x= 30

0r 5x = 3000

x= 300/5 = 600

Step-by-step explanation:

6 0

4 years ago

can anyone help tech me how to solve for tax and tip. im going to 6th grade and trying to get into the advanced group but I don'

baherus [9]

If something isn't clear or you're still confused about, let me know in the comments.

Step-by-step explanation:

Okay, here's my best try.

Suppose you have a bill for $8.45

If you are asked to add, say, 8% tax, you must calculate 8 percent of 8.45 and then add it to 8.45.

Begin by converting 8% to decimals by dividing by 100.

$\frac{8}{100}=0.08$ 8% is 0.08 in decimal form.

To calculate a percentage of a number, you multiply the decimal percent by the number; example:

$0.08(8.45)$ 8.45 is being multiplied by 0.08. The result is: 0.676. (this is the tax; however you have to round up to two decimal places: $0.68)

After finding the tax amount, if you are asked to add it to the bill, you have to add it to the original bill; in this case, $8.45

This would be: 0.68+8.45=9.13.

Therefore, the total bill after tax is for $9.13

----------------------------------------------------------------------------------------------------

With tips is the same thing, however, you can have 2 situations.

Situation 1: You are asked to calculate 15% tip of total bill.

In this situation, you can do the same we do to calculate tax.

Convert the percentage to decimal by dividing by 100.

$\frac{15}{100}=0.15$

and multiply it by the original bill.

$0.15(8.45)=1.2675$ . Rounding up, this would be $1.27 for tip.

If you were to add it to the original bill, simply sum.

$8.45+1.27=9.72$

The total bill after tips is for $9.72

Situation 2: You are asked to calculate 15% tip of the total bill with a tax of 8% included.

In this situation, you must first calculate the total bill with the tax added, like we did above; we got a bill for $9.13 (Tax included)

Then you can calculate 15% tip of this new bill that has tax included.

Convert

$\frac{15}{100}=0.15$

Multiply by the new bill (because this is the one that includes tax)

$0.15(9.13)=1.3695$ Round up.... $1.37 for tips.

If you are asked to give a total amount of money including tax and tips, add this to the bill.

9.13+1.37=10.50

This bill would be for $10.50

3 0

3 years ago