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4 years ago

What is the percent of decrease from 200 to 110? A. 45% B. 55% C. 82% D. 90%

Mathematics

1 answer:

strojnjashka [21]4 years ago

8 0

A) 45%, (100-200)/200=0.45 which also equals 45% :)

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With steps please

Nat2105 [25]

Answer: $75\ m$

Step-by-step explanation:

Given

The tower is 45 m high and Clinometer is set at 1.3 m above the ground

From the figure, we can write

$\Rightarrow \tan 32^{\circ}=\dfrac{43.7}{x}\\\\\Rightarrow x=\dfrac{43.7}{\tan 32^{\circ}}\\\\\Rightarrow x=69.93\ m$

Similarly, for $\triangle ACD$

$\Rightarrow \tan 47^{\circ}=\dfrac{43.7+y}{x}\\\\\Rightarrow 69.93\times \tan 47^{\circ}=43.7+y\\\\\Rightarrow 74.99=43.7+y\\\Rightarrow y=31.29\ m$

Height of the tower is $43.7+31.29\approx 75\ m$

8 0

3 years ago

I need help please ?!!!!

IRISSAK [1]

Answer:

its A you have the right one chosen

Step-by-step explanation:

7 0

3 years ago

What’s 22-25?<br> Plz help!

marysya [2.9K]

Answer:

-3

Step-by-step explanation:

When putting the smaller number in front of the bigger number your answer will be negative. I hoped I helped :)

4 0

3 years ago

Read 2 more answers

I need the answer pls

erastova [34]

The median is B. 2.5

Step-By-Step Explanation:

The dot plot goes by the data

1 2 2 3 3 4

those are six numbers in total!

Since 6 is an even number we'd need to find out the number in between the two numbers in the middle.

In this case that would be 2 and 3.

The number in the middle of 2 and 3 is 2.5

- - - - -

IN CONCLUSION

Your answer is B. 2.5

- - - - -

I hope I helped! :)

5 0

3 years ago

A composite figure is formed from a cone and a cylinder with the same base radius, and its volume can be calculated by multiplyi

olga55 [171]

The composite figure comprises of a cone balanced on top of cylinder

Step-by-step explanation:

The composite figure is formed from a cone and a cylinder with the same base radius, Let the base radius be r

Then the volume of the cone will be $V_{cone}$

Then the volume of the cylinder will be $V_{cylinder}$

$V_{cylinder} = \pi r^{2} h_{cylinder}$

The total volume of the composite figure will be V, where

$V= V_{cone} + V_{cylinder}$

$V = \frac{1}{3} \pi r^{2} h_{cone} +\pi r^{2} h_{cylinder}$

let the height of cone and cylinder be same

The volume of the composite figure will be $\frac{4}{3} \pi r$ $r^{2} h$

Hence $\frac{4}{3} = \frac{a}{b}$

Thecomposite figure comprises of a cone balanced on top of cylinder

3 0

4 years ago