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diamong [38]
2 years ago
9

{L}{9.8}" alt="5.5=2\pi \sqrt{\frac{L}{9.8}" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
vaieri [72.5K]2 years ago
8 0

Answer:

The length, L = 7.52 m.

Step-by-step explanation:

The given expression is

5.5= 2 \pi \sqrt\frac{L}{9.8}\\\\Sqauring on both the sides\\\\5.5 \times 5.5 = 4\pi^2 \times \frac{L}{9.8}\\\\L = 7.52 m

The value of length is 7.52 m.

prisoha [69]2 years ago
4 0

9514 1404 393

Answer:

  7.51 m

Step-by-step explanation:

The equation matches that required for finding the length of a pendulum that has a period of 5.5 seconds. We can solve for L to find the length.

  5.5=2\pi\sqrt{\dfrac{L}{9.8}}\\\\\dfrac{5.5}{2\pi}=\sqrt{\dfrac{L}{9.8}}\\\\\left(\dfrac{5.5}{2\pi}\right)^2=\dfrac{L}{9.8}\\\\L=74.1125/\pi^2\approx7.509

The length of a pendulum with period 5.5 seconds is about 7.51 meters.

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A dartboard has a diameter of 18 inches.What are its radius and circumference?
allsm [11]
Diameter of the dartboard as given in the question = 18 inches
Then
Radius of the dartboard will be = 18/2 inches
                                                  = 9 inches
We already know that
Circumference of a circle = <span>2π</span>r
We also know that the value of <span>π = 3.14159
Then
Circumference of the dartboard = 2 * 3.14159 * 9 inches
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So the radius of the dartboard is 9 inches and the circumference of the dartboard is 56.55 inches. I hope the procedure is absolutely clear to you.
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3 0
3 years ago
If $8700 is invested at 3% annual simple interest, how much should be invested at 6% annual simple interest so that the total ye
True [87]
First off, see  how much 8700 as principal, yields at 3% APR
that is \bf \qquad \textit{Simple Interest Earned}\\\\&#10;I = Prt\qquad &#10;\begin{cases}&#10;I=\textit{interest earned}\\&#10;P=\textit{original amount deposited}\to& \$8700\\&#10;r=rate\to 3\%\to \frac{3}{100}\to &0.03\\&#10;t=years\to &1&#10;\end{cases}

it will yield some amount

subtract that amount from 393
the difference is how much the yield will be on the 6% investment
so

\bf \qquad \textit{Simple Interest Earned}\\\\&#10;I = Prt\quad &#10;\begin{cases}&#10;I=\textit{interest earned}\\&#10;P=\textit{original amount deposited}\to& \$8700\\&#10;r=rate\to 3\%\to \frac{3}{100}\to &0.03\\&#10;t=years\to &1&#10;\end{cases}&#10;\\\\\\&#10;\implies \boxed{?}\\\\&#10;-----------------------------\\\\&#10;\textit{how much to invest at 6\%?}&#10;\\\\\\&#10;

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6 0
2 years ago
Divide 28x3 + 42x2 - 35x by 7x
Fiesta28 [93]
The answer is 4 x^{2} +6x-5

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8 0
3 years ago
Read 2 more answers
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Elenna [48]

Answer:

977.65

Step-by-step explanation:

Add three amounts together divide that number by 3.

2932.95/3=977.65

8 0
3 years ago
Read 2 more answers
If you roll a 6-sided die 54 times, what is the best prediction possible for the number of times you will roll an even number?
Harman [31]

Answer:

50% of the time (27 times) you will get an even number

6 0
3 years ago
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