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3 years ago

Help Please nothing i get is the right answer

Mathematics

1 answer:

Sonja [21]3 years ago

3 0

9514 1404 393

Answer:

L = 882/121 feet

Step-by-step explanation:

Set the appropriate variables in the equation to the given values and solve for the unknown.

$T=2\pi\sqrt{\dfrac{L}{32}}\\\\3=2\left(\dfrac{22}{7}\right)\sqrt{\dfrac{L}{32}} \qquad\text{fill in given values}\\\\ \dfrac{3\cdot7}{44}=\sqrt{\dfrac{L}{32}} \qquad\text{multiply by $\dfrac{7}{44}$}\\\\ \left(\dfrac{21}{44}\right)^2=\dfrac{L}{32}\qquad\text{square both sides}\\\\ \dfrac{32\cdot441}{1936}=L \qquad\text{multiply by 32}\\\\ \boxed{L=\dfrac{882}{121}}\qquad\text{reduce the fraction}$

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<em>Additional comment</em>

That's about 7.3 feet. (You can compare this to what you know about the time it takes for a cycle when swinging on a swing set.)

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A helicopter is flying at an elevation of 575 feet directly above a horizontal highway. Two motorists are driving cars on the hi

Ket [755]

Answer:

Distance between cars rounded to the nearest foot is : 1903 ft

Step-by-step explanation:

Notice that two right triangles can be used to represent the diagram of this situation. One between the car whose angle of depression is $28^o$ , and the other with the car with angle of depression $35^o$ (see attached image)

Each triangle in the attached image is depicted with a different color. and as one can see, the distance between both cars is the addition of the side "x" in one triangle, to the side "y" in the other.

Notice as well that the information known for both right-angle triangles is one acute angle, and the side opposite to it. And what one needs to find is the side adjacent to this acute angle. Then, the function to use in both triangles, is the tangent:

a) For the $28^o$ [orange] triangle :

$tan(28^o)=\frac{575}{y} \\y=\frac{575}{tan(28^o)} \\y=1081.42\,\,ft$

b) For the $35^o$ [green] triangle:

$tan(35^o)=\frac{575}{x} \\y=\frac{575}{tan(35^o)} \\y=821.19\,\,ft$

Therefore the total distance between cars is:

1081.42 ft + 821.19 ft = 1902.61 ft

which to the nearest foot can be rounded as: 1903 ft

4 0

3 years ago

8.75 x 37.5 and how to do it

salantis [7]

8.75 x 37.5= ? Well all you do is have to line up the decimals and work it out! :) it's simple

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4 years ago

Wholesome Pizza surveyed a random sample of 404040 Trinity Food Festival attendees about their favorite type of pizza. Of the at

ale4655 [162]

For this case the first thing we should do is find the percentage of people surveyed who said that pizza pizza was their favorite type of pizza.
We have then:
$x = (21/40) * (100)

x = 52.5%$
We are now looking for 52.5% of 1600 people.
For this, we make the following rule of three:
1600 ----------> 100%
x ---------------> 52.5%
Clearing the value of x we have:
$x = (52.5 / 100) * (1600)

x = 840$
Answer:
the most reasonable estimate for the number of Trinity Food Festival attendees whose favorite type of pizza is sausage pizza is:
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6 0

3 years ago

Read 2 more answers

Carly bought one one yard of fabric, convert the<br> measurement to centimeters.

sergiy2304 [10]

Answer:

the fabric is 91.44 centimeters long

6 0

3 years ago

I need help what's my equation for the picture below.

Leokris [45]

228-12.50*2=x*10
228-25=10x
203=10x
Divide both sides by 10 and it is:
20.3=x

The price of each ticket is $20.30

Hope this helps :)

4 0

4 years ago