All categories

3 years ago

Please Help!!! 25 points!!! An emergency!!!

Mathematics

2 answers:

azamat3 years ago

8 0

Answer:

C is the correct answer.

Step-by-step explanation:

Imagine you're cutting the pyramid in half with a knife, and the cross section is shape of the inside of the pyramid. You're basically just cutting it in half from top to bottom.

ValentinkaMS [17]3 years ago

8 0

The correct answer is c

You might be interested in

Katie loves to read! In the last few months she has read 333 graphic novels, 222 mysteries, 444 sci-fi novels, and 212121 comic

sineoko [7]

Is there a picture for this I could maybe help

7 0

3 years ago

Read 2 more answers

A lighthouse is located on a small island 2 km away from the nearest point P on a straight shoreline and its light makes four re

ddd [48]

Answer:

62.8 km per min

Step-by-step explanation:

Let the diagram of this situation is shown below,

In which $\theta$ is the angle made by light to the straight line joining the lighthouse and P,

∵ Light makes 4 revolutions per minute.

Also, 1 revolution = $2\pi$ radians

So, the change in angle with respect to t ( time ),

$\frac{d\theta}{dt}=8\pi\text{ radians per min}$

Let x be the distance of beam from P,

$\implies \tan \theta = \frac{x}{2}$

Differentiating with respect to x,

$\sec^2 \theta \frac{d\theta}{dt}=\frac{1}{2}\frac{dx}{dt}$

$(1+\tan^2 \theta) (8\pi) = \frac{1}{2}\frac{dx}{dt}$

$(1+\frac{x^2}{2^2})(8\pi) = \frac{1}{2}\frac{dx}{dt}$

If x = 1 km,

$(1+\frac{1}{4})8\pi =\frac{1}{2}\frac{dx}{dt}$

$\frac{5}{4}8\pi = \frac{1}{2}\frac{dx}{dt}$

$\implies \frac{dx}{dt}=\frac{80\pi}{4}= 20\pi\approx 62.8\text{ km per min}$

Hence, the beam of light moving along the shoreline with the speed of 62.8 km per min

7 0

4 years ago

At a high school, the probability that a student is a senior is 0.25. The

Dvinal [7]

Answer:

Step-by-step explanation:

%%%%dffdsdddcccccfcf

6 0

3 years ago

-4,-1,2,5<br> What is the sequence

dangina [55]

Answer:

-4,-1,2,5 if your going up in value and if your going down 5,2,-1,-4

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Need Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

kifflom [539]

The firat box goes into the seond box and the second box goes into the first box

7 0

3 years ago

Read 2 more answers