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
Setler [38]
3 years ago
13

Khalaf wants to know the length of a tunnel built through a mountain. To do so, he makes the measurements shown in the figure be

low. Use these
measurements to find the length of the tunnel.
201 m
146 m
85
Carry your intermediate computations to at least four decimal places.
Round your answer to the nearest tenth of a meter.
meters
Х
5
?

Mathematics
1 answer:
IRINA_888 [86]3 years ago
5 0

Answer:

237.9 meters

Step-by-step explanation:

Let x represent the length of the tunnel.

Applying the Cosine Law, we have:

x² = 201² + 146² - 2*201*146*Cos(85)

x² = 61,717 - 58,692*0.0872

x² = 61,717 - 5,117.9424

x² = 56,599.0576

x = √56,599.0576

x = 237.9 m (nearest tenth)

You might be interested in
How do you find square root of any number just give me a example
soldier1979 [14.2K]
25/5=5 5•5=25 there should be a button ur calculator too
5 0
3 years ago
Read 2 more answers
National Safety Council statistics show that a death is caused by a motor vehicle
N76 [4]

Answer:

death 12

------------ = ----

disabling 14

5 0
3 years ago
Read 2 more answers
Fi you put 200 feet shorter than the height of the lighthouse what would it be ?
Vikki [24]

Answer:

Step-by-step explanation:

it would be like 300 feet more

4 0
3 years ago
Which choice correctly shows rounding to the hundredths place?
Romashka [77]
The correct answer would be the last one.

3.8765+4.824+1.733 > 3.88 +4.82+1.73 

This link is a good visual prompt of where the tenths, hundredths, thousandths, etc are.

Explanation:
Okay we are rounding to the hundredths. When we round a decimal up, we are basically being lazy so we just simplify the number. When we look at a number we are going to round we first need to spot where we are rounding up. In this case it is the hundredths.  Ex. 4.234/ Now the number that we are rounding "needs help from his buddy on his right" If the number on the right is 5 or greater, he is strong enough to help out. But if the number is 4 or lower he is too weak to help out. So lets do an example: Ex. 4.234. We see that 3 is the hundredths and the 3 turns to his buddy on the right and asks if can help. But since his buddy is 4 he can't help out.

Working out the problem:
The first option we are given the answers are in tenths so we can rule that out

The second option we are given the answers are rounded into hundredths so lets round the numbers/  3.825= 3.83, but the answers given (3.82) do not match up.

The third option: The answers are in hundredths so lets round the numbers.. 3.824= 3.82, but the answers given(3.81) do not match up

*Now by process of elimination you would now know that the 4th is the correct answer but lets work it out anyways, plus doing that is a bad habit to get into*

The fourth option: the answers given are in hundredths so let round the numbers.. 3.8765 (tricky since the answer all the way to the right is above 5 it rounds the helping buddy up) like so: 3.877... 3.877= 3.88. This turns out to be the right answer as you round up all of the hundredths places. 

I hope this helps you out and hope you can understand this! Have a GREAT DAY!

4 0
4 years ago
Read 2 more answers
(I'll mark brainlist!)
Svetllana [295]

Answer:

A. 3

Step-by-step explanation:

Hope this helps!     :3

plz mark as brainliest!

6 0
3 years ago
Other questions:
  • What type of triangle has exactly two acute angles?
    8·2 answers
  • Which of the following shows the factors of 9x^2 + 3x - 2?
    10·2 answers
  • You use 3 cans of soup to serve 5 people. If you want to serve 20 people, what should you do?
    6·2 answers
  • A soccer field is rectangular and measures 100 yards by 60 yards. a soccer ball is randomly kicked onto the field. if it is equa
    15·1 answer
  • Hey I need help on this question if you help me 333 envelopesuehwhhegehshdhdgsgsgsgdgdhsgshdhdhdhdhdhdhdhdjdhdhdhdhdhdhdhdhdhdhd
    7·1 answer
  • Simplify 4(2x^3y^4)^4/2(2x^2y^6)^3. Show your work. Please help ASAP!!
    6·1 answer
  • What is this symbol? and can someone please solve this algebra equation for me please?
    9·2 answers
  • Find f(-2) for the function f(x) = 3x2 – 2x + 7.
    8·1 answer
  • The silence of a triangle are 9 12 and 15 is this a right triangle
    10·1 answer
  • Thomas has graphed the function y = 7x – 10 on a coordinate plane.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!