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
nignag [31]
2 years ago
5

2 vertical buildings are 42 metres apart and the shorter building is 135m high. The angle of elevation from the top of the short

er building to the top of the taller building is 60 degrees. Find the height of the taller building to the nearest metre.
Mathematics
1 answer:
ipn [44]2 years ago
6 0

Answer:

Step-by-step explanation:

base=42 m

height=h=?

base angle θ=60°

tan 60=h/42

h=42tan 60=42√3≈72.75 m

height of taller building=135+42√3 m≈135+72.75≈207.75 m≈208 m

You might be interested in
Which are correct statements regarding proofs? Select three options.
Masja [62]

Answer:

the answer is c hope u get it right

Step-by-step explanation:

A flowchart proton gives valuable represent state mental and resions

3 0
3 years ago
Read 2 more answers
14)
Mkey [24]

Answer:

Solution of a System. In general, a solution of a system in two variables is an ordered pair that makes BOTH equations true. In other words, it is where the two graphs intersect, what they have in common. So if an ordered pair is a solution to one equation, but not the other, then it is NOT a solution to the system.

5 0
3 years ago
Read 2 more answers
Using partial product, are the products 48 and 64
shusha [124]
For 49 It's 4*12 and 2*24 and 1*48 and for 64 it's 8*8 and 2*32
4 0
2 years ago
Pls help, 20 points!!
klemol [59]

Answer:

(-18,9)

Step-by-step explanation (work shown in picture attached):

1) The first step in solving by substitution is to isolate the y-term in one of the equations if it is not already isolated. Isolate y in the first equation by dividing both sides by -2. This leaves us with the equation y = \frac{-x}{2}

2) Now, substitute \frac{-x}{2} for the y in the second equation. Simplify and isolate x. (You can multiply everything by -2 to get rid of the fraction.) This leaves us with x = -18.

3) We've found the x-value of the solution, -18. Now, substitute -18 for x back into one of the original equations (I chose the first one because it was simple) and isolate y. This gives us y = 9. Thus, in point form, the answer is (-18,9).

7 0
3 years ago
8. You recorded the time in seconds it took for 8 participants to solve a puzzle. The times were: 15.2, 18.8, 19.3, 19.7, 20.2,
kirill115 [55]

Answer:

Xbar = 20.813

Median = 19.95

5 - number summary :

Minimum = 15.2

Q1 = 19.05; Q2 = 19.95 ; Q3 = 21.95 ; maximum = 29.4

Standard deviation, s = 4.068

Step-by-step explanation:

Given the data:

X : 15.2, 18.8, 19.3, 19.7, 20.2, 21.8, 22.1, 29.4

Ordered data:

15.2, 18.8, 19.3, 19.7, 20.2, 21.8, 22.1, 29.4

The mean (xbar) :

Xbar = Σx / n ; n = sample size = 8

Xbar = 166.8 / 8 = 20.8125

Xbar = 20.813

The median :

1/2 *(n+1)th term

1/2(9) = 4.5

(4 + 5)th term / 2

(19.7 + 20.2) / 2 = 19.95

The five number summary :

Minimum = 15.2

Lower quartile (Q1) = 1/4(9) = 2.25 ; (2nd + 3rd) term / 2

(18.8 + 19.3) / 2 = 19.05

Median (Q2) = 19.95

Upper quartile (Q3) :

3/4(9) = 6.75 = (6th + 7th) / 2

(21.8 + 22.1) / 2 = 21.95

Maximum = 29.4

The standard deviation, s = sqrt[(x - xbar)²/ (n-1)]

Using calculator ;

s = 4.068

4 0
2 years ago
Other questions:
  • Identify a counterexample to disprove n3 ≤ 3n2, where n is a real number.
    14·2 answers
  • How do I factor this polynomial by grouping?<br> 2x^2 - 13x + 20
    15·2 answers
  • The slope of any line perpendicular to , where A(0, -3) and B(4, 9) are two points on the line, is m =
    8·1 answer
  • Carl's pet rabbit weighs 4 pounds.
    11·2 answers
  • Please answer I need help
    13·2 answers
  • Solve the inequality. <br><br> 42 &lt; –6d
    11·1 answer
  • I need this please help me
    7·1 answer
  • What is the value of x ? <br> a. 10.4<br> b. 52<br> c. 61.6 <br> d. 92
    6·1 answer
  • Sport Soccer Jogging Walking Skiing Football Total Hrs 5 20 10 What percentage of total hours was spent skiing? [?]% 5 10 50​
    7·1 answer
  • -5= -10+y how do i reorder this and why do i reorder it in that way? i think i know how to reorder it i'm just confused on why i
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!