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
Doss [256]
3 years ago
6

a surveyor standing 64 meters from the base of a building measures the angle to the top of building and finds it to be 39 degree

s . the surveyor then measures the angle to the top of the radio tower on the building and finds that it is 48 degrees. how tall is the radio tower?
Mathematics
1 answer:
nexus9112 [7]3 years ago
5 0
The distance of the observer and height of the building form a right angle triangle. Using:
tan∅ = height/base
We calculate the height of the building:
height = 64tan(39)
height = 51.8 meters

The second angle is obtained when the height of both the building and tower are used:
Height(building + tower) = 64tan(48)
51.8 + tower height = 71.1
tower height = 19.3 meters
You might be interested in
Find the maximum value or minimum value for the function f(x) = 0.15(x + 1)² - 3.
il63 [147K]

Answer:

The minimum value for  f(x) = 0.15(x + 1)^2 - 3 is -3.

Step-by-step explanation:

Given function is f(x) = 0.15(x + 1)^2 - 3

We need to find the maximum value or the minimum value for the function.

Now, differentiate f(x) = 0.15(x + 1)^2 - 3  w.r.t x.

f'(x) =\frac{d}{dx}(0.15(x + 1)^2 - 3)\\f'(x)=\frac{d}{dx}(0.15(x+1)^2-\frac{d}{dx}(3)\\

f'(x)=2\times 0.15(x+1)\frac{d}{dx}(x+1)-0\\f'(x)=0.3(x+1)(1)\\f'(x)=0.3(x+1)

Now, we will equate f'(x)=0 to find critical point.

0.3(x+1)=0\\x=-1

Plug this critical point in to the function f(x) = 0.15(x + 1)^2 - 3  we get,

f(-1) = 0.15(-1 + 1)^2 - 3\\f(-1)=-3

Also, f''(x)=0.3 which is positive, We have minimum value.

So, the minimum value for  f(x) = 0.15(x + 1)^2 - 3 is -3.

7 0
3 years ago
PLEASE HELP!!! ILL GIVE BRAINLIEST THIS IS WORTH 20 POINTS PLEASE (ignore where it says 8 &2 points it’s how much the questi
telo118 [61]

Answer:

x= -3 is the answer

UW=3 is the answer..

hope it helps you mate

please mark me as brainliast

4 0
3 years ago
Read 2 more answers
You and three friends are planning a trip. You want to keep the cost below $90 per person. Write and solve an inequality that re
velikii [3]

Answer:   x < 360

Step-by-step explanation:

Let x be the total cost for the trip.

And, Here the total number of person = 4

Therefore, the cost for each person = x/4

And,   According to the question, The cost must below $90 per person.

Therefore, x/4 < 90

⇒   x < 360

Which is the required inequality for the situation.


8 0
3 years ago
$8.00+$6.00 = <br> answer
Lady bird [3.3K]

Answer:

$8.00+$3.00+$3.00=$14.00

Step-by-step explanation:

5 0
2 years ago
Your food bill at a restaurant is $30. You leave a 20% tip. The sales tax is 6%. What is the total cost of the meal?
ohaa [14]
The total cost of the meal is $37.80

Given:
Food bill = $30
tip = 20%
sales tax = 6%

Tip and sales tax must be based on the food bill.

Tip = $30 x 20% = $6
Sales Tax = $30 x 6% = $1.80

Food bill :   30.00
Tip               6.00
Sales tax  <u>   1.80</u>
Total cost 37.80


7 0
3 years ago
Read 2 more answers
Other questions:
  • How to do long division with polynomials?
    12·1 answer
  • Cynthia Besch wants to buy a rug for a room that is 20 ft wide and 31 ft long. She wants to leave a uniform strip of floor aroun
    13·2 answers
  • The graph shows the relationship between the weight of a box and the number of books added to the box.
    9·2 answers
  • You want to buy a pizza with 2 toppings. The restaurant offers five possible toppings. How many ways can you choose 2 toppings?
    5·1 answer
  • Does a triangle with these side lengths exist?<br> 15, 12,9
    14·2 answers
  • Work out the area of the trapezium ABDE.<br> A<br> В.<br> 7.5 cm<br> 2.5 cm<br> С<br> 5 cm<br> E
    12·1 answer
  • Which one of these is a function?
    5·1 answer
  • &gt;
    10·1 answer
  • The number of sit-ups that all tenth-grade girls can do in 5 minutes is normally distributed. beth surveyed 20 of her fellow int
    12·2 answers
  • Find the prime factorization of 420​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!