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
MrMuchimi
3 years ago
13

A person in an helicopter flying at a height of 700 meters, observes two objects lying opposite to each other on either side of

the bank of a river. The angles of depression of the objects are 35° and 50°. Find the width of the river to the nearest foot.
A. 412 ft
B 1000 ft
C 1342 ft
D 1587 ft
Mathematics
1 answer:
weqwewe [10]3 years ago
6 0

Answer:

Let C be the position of a person in a helicopter. A,B be two objects lying opposite to each other on either bank of a river.

Let AD=x,BD=y

In ΔACD,

⇒tan30

o

=

AD

CD

​

⇒

3

​

1

​

=

x

700

​

⇒x=130

3

​

⇒x=130(1.732)=1212.4

∴ the width of the river =x+y

=1212.4+130

=1342.4m

Step-by-step explanation:

You might be interested in
Please help! If possible please show your work. Thank you in advance!! :D
Rudiy27

Answer:

  • (-4)³ = -64
  • -64

Step-by-step explanation:

The first step in solving the equation is to cube both sides:

  (∛x)³ = (-4)³ . . . . . = (-4)(-4)(-4) = 16(-4) = -64

  x = -64 . . . . . simplified

__

We're not sure what "checking" is supposed to involve here. Usually, one would check the answer by seeing if a true statement is made when the answer is put into the original equation.

  ∛(-64) = -4 . . . true

Many calculators will not compute √(-64) because they compute roots using logarithms. The log of a negative number is not defined.

So, the way one would check this is to cube both sides, which is how we got the answer in the first place. We expect the same result from doing the same operation again, so it isn't really a check.

6 0
2 years ago
15 POINTS!!!
Alex Ar [27]

Answer:

Step-by-step explanation:

y=mx+b

y-intercept= 1

b=1

point (5,4)

x=5

y=4

y=mx+b

4=m(5)+1

5m=3

m=3/5

rate of change = 3/5

5 0
2 years ago
Read 2 more answers
Which algebraic expression is a polynomial with a degree of 2?
Tpy6a [65]

Answer:

D

Step-by-step explanation:

The highest power of X in D is 2; hence we see

6x^2 - 6x + 5

7 0
3 years ago
Read 2 more answers
.......................................
klio [65]

Answer:

Step-by-step explanation:

d

7 0
3 years ago
A tire has a diameter of 184 cm what is the circumference of the tire
viktelen [127]
Here is your answer

diameter of tyre= 184cm

So,

Circumference=\:{pi}×d

= 3.14 × 184 cm

= 577.76 cm

HOPE IT IS USEFUL
8 0
3 years ago
Other questions:
  • What is the sum of the first 30 odd numbers? How to calculate it without having to add all of them.
    12·1 answer
  • the length of a rectangle is 5ft longer than it's width. if the perimeter of the rectangle is 34ft, find it's area?
    11·1 answer
  • I need help with #11
    13·2 answers
  • What number is understood to be the<br> coefficient (number in front of) of x2 <br> a) 0 B) 1
    8·1 answer
  • What is the probability that a randomly selected house with 2 bathrooms has 3 bedrooms?
    12·2 answers
  • Azul is making space for the pool table that will go in the game room. The scale drawing shows the length of the table as 2 inch
    13·1 answer
  • Researchers from Dartmouth Medical School conducted a study in 2003 to look at the connection between watching actors smoking in
    9·1 answer
  • Albert bought 3 blank tapes for $5.95. Find<br> the cost per tape to the nearest cent.
    9·2 answers
  • Simplify. Rewrite the expression in the form a^n. A • A^7
    10·1 answer
  • Tell whether the number is written correctly in scientific notation. 9.9 times 10*-4
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!