BRAINLIST ANSWER!!!!!!!!!!!!!!!!!!!!!!!!!!!!1. A wooden plank is leaning against an outside wall of a building. The bottom of the plank is 3 ft from the wall. Find each of the following values, and show all your work.
(a) Find the approximate length of the plank. Round to the nearest tenth of a foot.
(b) Find the height above the ground where the plank touches the wall. Round to the nearest tenth of a foot.

2. A support wire is strung from a tree. The bottom of the wire is 24 ft from the tree. The length of the wire is 30 ft. Find each of the following values, and show all your work.
(a) Find the value of x. Round to the nearest tenth of a degree.
(b) Find the approximate height where the wire touches the tree. Round to the nearest foot.

Answers

Answer 1

Answer: Question 1:
(a) Using sine rule
ground/Sin 49 = plank/Sin 90

But sine 90 = 1, ground = 3 ft
Then,
3/Sin 49 = plank
Length of the plank = 3/Sin 49 ≈ 4.0 ft (rounded to nearest tenth)

(b) Height where the plank touches the wall

wall = Sqrt (plank^2 - ground^2) = Sqrt (4.0^2 - 3.0^2) ≈ 2.6 ft (Rounded to nearest tenth)

Question 2:
(a) Angle x
ground = 24 ft
support wire = 30 ft

Applying sine rule
support wire/Sin 90 = ground/Sin (90-x) ----- but Sin 90 = 1
Then,
Support wire = ground/Sin (90-x)
Sin (90-x) = ground/support wire = 24/30 = 0.8
90-x = Sin^-1(0.8) = 53.13 => x = 90-53.13 = 36.9°

(b) Height where the wire touches the tree (tree)
tree = Sqrt (support wire^2 - ground^2) = Sqrt (30^2 - 24^2) = 18 ft

Related Questions

Jason and Ron together have 97 baseball cards. Jason has four more than twice as many cards as ron. How many baseball cards does each person have?
What number is represented by 3^3 x 7?
If the time is 4:25 am what is the time that is 9 hours and 40 minutes before the time is shown
PLEASE HELP ME-Name the angles and sides of each pair of triangles that are congruent.
I Tangent Ratio. Find the missing side. Round to the nearest Tenth.

Answer fast plzzzzzzzzz

Answers

Answer: D) 45 ft.

Step-by-step explanation:

You have the measurements for the sides BC and CD, if you divide BC by CD you get the dialation. Which is 2.5. Multiply 18 by 2.5, Congrgulations you have the answer!

Simplify the expression

Answers

10/2
5/1
the answer is 5 because the two 12P's cancel each other out.

Liam volunteers to help plan the event. First month he volunteered for x hours. The next month he volunteered for 2 times as many hours as he had the first month. If he volunteered for a total of 45 hours,how many hours did he volunteer during the first month? Write an equation to represent the situation and solve

Answers

Answer:

0/3 that’s what my teacher said on this test

Step-by-step explanation:

Work the following pricing problems for services rendered. (For all calculations use hundredths.)Labor time = 4 1/2 hours
Overhead rate = 95%
Retail price of parts = $134.75
Total cost of job = $241.98

Hourly rate? $

Answers

Labor time = 4 1/2 hours = 4.5 hours
overhead rate = 95% - mostly dependent on labor
retail price of parts = 134.75
total cost of job = 241.98

241.98 - 134.75 = 107.23
107.25 / (4.5 x 1.95) = 107.25 / 8.78 = 12.22 hourly rate

labor : 12.22 x 4.5 =   54.99
overhead: 54.99 x 95% =   52.24
retail price of parts   = 134.75
total cost of job: 241.98

Answer:

$12.22

Step-by-step explanation:

Trapezoid TUVM is rotated 90 counterclockwise about the origin. After the rotation, what is the location of vertex V?A (2,-6)

B (-6,2)

C (6,-2’

D (-2,6)

Answers

Answer:

Step-by-step explanation:

Under a counter clockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ) , then

V (6, 2 ) → V' (- 2, 6 ) → D

Alice make 2 bunches of balloons turre are the same Numbers of red balloons and the same Numbers of blue ballons in each did sirve use all of the ballons

Answers

she put 8 balloons in each color group

Answer:

drop out

Step-by-step explanation: