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
Fed [463]
2 years ago
13

Nick wanted to determine the length of one blade of a windmill. He stood at a point on the ground 440 feet from the windmill's b

ase. Using surveyor's tools, Nick measured the angle between the ground and the highest point reached by the top blade and found it was 38.8°. He measured the angle between the ground and the lowest point of the top blade and found it was 30°. Determine and state a blade's length, x, to the nearest foot.
Mathematics
1 answer:
mafiozo [28]2 years ago
7 0

Answer:There are two right triangles. You need to find the opposite side (the height) of each of them. The difference between the two is the height of the blade, x.

You know the adjacent, 440, and you are looking for the opposite, so you need to use tan for both.

tan (30) = y / 440

y = 440 * tan (30) = 254.034...

tan (38.8) = z / 440

y = 440 * tan (38.8) = 353.769.--

353.8 - 254.0 = 99.8 = 100 feet.

Step-by-step explanation:

You might be interested in
Please help fast!!!!!!!
garri49 [273]

Answer:

l am sorry l do not get the question

8 0
3 years ago
Suppose that you are conducting a survey on how many students have blue eyes in each first period classroom at Garfield Middle s
rusak2 [61]

Answer:

  • <u>The correct statement is the first one: </u><u><em>The number of blue-eyed students in Mr. Garcia's class is 2 standard deviations to the right of the mean</em></u><em> </em>

<em />

Explanation:

To calculate how many<em> standard deviations</em> a particular value in a group is from the mean, you can use the z-score:

      z-score=(x-\mu )/\sigma

Where:

  • z-score is the number of standard deviations the value of x is from the mean
  • \mu  is the mean
  • \sigma  is the standard deviation

Substitute in the formula:

       z-score=(10-6)/2=4/2=2

Which means that <em>the number of blue-eyed students in Mr. Garcia's class is 2 standard deviations</em> above the mean.

Above the mean is the same that to the right of the mean, because the in the normal standard probability graph the central value is Z = 0 (the z-score of the mean value is 0), the positive values are to the right of the central value, and the negative values are to the left of the central value.

Therefore, the correct statement is the first one: <em>The number of blue-eyed students in Mr. Garcia's class is 2 standard deviations to the right of the mean, </em>

4 0
3 years ago
⚠️HELP ME!!!⚠️<br> ITS URGENT (NO FUNNY ANSWERS)
Damm [24]

Answer:

They will buy 4 hotdogs and 3 drinks

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
You and three friends go to the town carnival. You have a coupon for $20 off that will save your group money! If the total bill
Lunna [17]

Answer:

30 that singular tickets for each friend and if your asking for total it would be 120. :)

Step-by-step explanation:

They paid 100 but they had a 20$ off coupon, this means the orignial total would be $120 so 120 divided by 4 (there's four people) = $30 each :)

hope this helped

5 0
3 years ago
Write the answer in interval notation
katovenus [111]
The domain is (-infinity, 6] I believe.
6 0
3 years ago
Other questions:
  • URGENT PLEASE HELP !!!
    12·1 answer
  • Plastic Knives are sold in packs of 18 for 45p. Plastic Forks are sold in packs of 15 for 41p. Jace wants to buy the same number
    7·1 answer
  • Classify the following as a fraction, expression, equation, or inequality b - 7 &lt; 17
    6·1 answer
  • Make an equation to represent the area of a square whose sides are given by the expression x+y
    5·2 answers
  • 2(3w+9z) simplify it please .
    14·2 answers
  • A group of 5 students are running a relay race. If the race is 1/4 of a mile long and each student runs the same distance how fa
    11·2 answers
  • What is a equivalent ratio to 12/18
    14·1 answer
  • Subtract p from 8, then divide 3 by the result
    14·1 answer
  • Write an equation for:<br><br> The sum of the square of a number and a second number is eighteen.
    8·1 answer
  • Question 5 of 6Which exponential expression is equivalent to the one below?(22• (-7))40A. 40 • (22• (-7))O B. (22) • (-7)40C. (2
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!