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
LenKa [72]
2 years ago
13

A source of laser light sends rays AB and AC toward two opposite walls of a hall. The light rays strike the walls at points B an

d C, as shown below:
A source of laser light is at point A on the ground between two parallel walls. The walls are perpendicular to the ground. AB is a ray of light which strikes the wall on the left at point B. The length of AB is 40m. AC is a ray of light which strikes the wall on the right at point C which is 80 m above the ground. The ray AB makes an angle of 60 degrees with the ground. The ray AC makes an angle of 45 degrees with the ground.

What is the distance between the walls?
Mathematics
1 answer:
snow_tiger [21]2 years ago
3 0

The distance between the walls is: 76.56854249

Cos(60)=A/40

Cos(45)=A/80

20+56.56854249

You might be interested in
The sample variance of hourly wages was 10. what is the sample standard deviation?
lapo4ka [179]
<span>Standard deviation is defined as the quantity which expresses by how much the members of a group is different from the mean value for the group.
</span>
The sample standard deviation with a <span>sample variance of hourly wages 10 will be $3.16.

Explanation:

</span><span>The standard deviation is the square root of the variance.
Therefore,
The square root of 10 dollars can be calculated as:

 </span>√10 = $3.16
8 0
3 years ago
Renting video games from Store A costs $3.50 per game plus a monthly fee of $7.50. Renting video games from Store B costs $5.00
Burka [1]

Answer:

A

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
For a standard normal distribution (µ=0, σ=1), the area under the curve less than 1.25 is 0.894. What is the approximate percent
Nesterboy [21]

Answer:

10.6%

Step-by-step explanation:

Normal curves are symmetrical.  That means that on a standard normal distribution,  the area less than -1.25 is the same as the area greater than +1.25.  The total area under the curve is 1, so:

P = 1 - 0.894

P = 0.106

Approximately 10.6% of the area under the curve lies below -1.25.

8 0
3 years ago
Please help calc problem
lys-0071 [83]
Please tell me what’s the question. So I can answer.
4 0
2 years ago
Read 2 more answers
What is 5 x 23 x 2 pemdas
Wittaler [7]
When you multiply it is just 5*23=115
115*2= 230

8 0
3 years ago
Read 2 more answers
Other questions:
  • The histogram shows the 9th grade shoe sizes at a Lakeview High School. Which inequality correctly describes the relationship be
    13·1 answer
  • The Rotation R maps all 60° about O the center of the regular hexagon. State the image of B for the following rotation.
    12·2 answers
  • Whats an strategy you could use to compare 2 out of 6 and 5 out of 8
    8·1 answer
  • Maya spent her allowance on playing an arcade game a few times and riding the Ferris wheel more than once.
    7·1 answer
  • Which of the following describes a simple event?
    15·2 answers
  • What is the range of the function f(x)=26-2x
    5·1 answer
  • At the last basketball game, 12 out of the first 48 people who entered the stands were wearing a coat. If this sample is represe
    11·1 answer
  • Which expression shows another way to write 36+16?<br> 419) + 4<br> 4(9+4)<br> 6(6+8)<br> (6+4)(6+4)
    9·1 answer
  • Plz help me thank you. 4 cm of the ice tray
    11·2 answers
  • PLEASE HELP
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!