1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dvinal [7]
3 years ago
7

The length of the shadow of a pole on level ground increase 90m, when the angle of elevation of the sum changes from 58-38.calcu

late the height of the pole, correct to 3sf

Mathematics
1 answer:
bazaltina [42]3 years ago
8 0

Answer: h = 137.4 metres

Step-by-step explanation:

Given that the length of the shadow of a pole on level ground increase 90m, that is, (x + 90)m will be the total length of the shadow. Also we are given that the angle of elevation of the sum changes from 58-38.

To calculate the height, we will employ trigonometry ratio. SohCahToa which are: tan 58 and tan 38.

Please find the attached files for the solution

You might be interested in
Find the surface area of the prism.
Fed [463]
What do you mean I need to see the prism ??
5 0
2 years ago
A water sprinkler has a range of 5 meters as shown. The jet of water from the sprinkler sweeps out at an angle of 85° as the noz
damaskus [11]

Take a look at the attachment below. It may help!

With this sector we can create a proportion to find the area watered by the sprinkler. 85 degrees over a total 360 degrees would be simplified to the following -

17 / 72 = ( About ) 4.235

Thus, we can calculate the area of the circle with a range of 5 meters radius, and divide by about 4.235 to receive the area watered by the sprinkler, or the area of the sector -

Area( Full Circle ) = \pi r^2,\\Area( Full Circle ) = \pi * ( 5 )^2,\\Area( Full Circle ) = 25\pi,\\\\Area( Full Circle ) = ( About ) 78.5

__________________________

Area( Watered By Sprinkler ) / Area( Sector ) = 78.5 / 4.235,\\Area( Watered By Sprinkler ) / Area( Sector ) = ( About ) 18.5

<u><em>The solution should be about 18.5 meters^2</em></u>

3 0
3 years ago
A swimming pool has to be drained for maintenance. The pool is shaped like a cylinder with a diameter of 5 m and a depth of 1.4
Korolek [52]

Answer:

8 hours

Step-by-step explanation:

basic equation

Q (flow rate) = V (volume)/ t (time)

so to find the time we just rearrange the equation and become

t = V/Q

V of cylinder

V = πr²T

and r (radius) = ½ diameter

V = 3.14 x 5² x 1.4

V = 109.9 m³

if the Q is 13 m³/hour then

t = 109.9/13 = 8.453 hours

round to nearest hour = 8 hours

6 0
2 years ago
Please help. tap the photo to see the whole problem. thanks. ​
Bond [772]
He didn’t multiply the equation by 1/2 in the second part so it threw his whole answer off. Hope this helps
3 0
2 years ago
Use the following model.
kaheart [24]
Answer:
B.4
Step-by-step explanation:
the base is the bottom and on the bottom are what looks to be 4 bases

Hope this helps have a nice day
8 0
3 years ago
Read 2 more answers
Other questions:
  • The endpoints of MP are M(1,4) amd P(16,14). If A partitions MP in a ratio of MA:AP = 2:1, which of the following represent the
    8·1 answer
  • given: m&lt;1=m&lt;2,m&lt;2=m&lt;3. prove:m&lt;1=m&lt;3. write a two column proof ...geometic proof
    7·1 answer
  • How do you get 12 by using the numbers nine and three and two and six but you can only use each number once in each operation wh
    6·1 answer
  • What type of function is y=7(5/4)x
    9·1 answer
  • What is the sum of 24 and 12 divided by 9
    5·2 answers
  • Put into scientific notation 2910000
    9·1 answer
  • What is the domain function?
    8·2 answers
  • If point P is 4/7 of the distance from M to N, what ratio does the point P partition the directed line segment from M to N into?
    6·2 answers
  • I need help with #14 &amp; #15 quickly!
    13·1 answer
  • H(n)=-15•6^n complete the recursive formula<br>h(1)=<br>h(n)=h(n-1)•<br><br>ILL MARK BRAINLIEST​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!