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
mariarad [96]
2 years ago
15

Find the value 25 points for you, a thanks, 5 star rating and brainliest to the right answer

Mathematics
1 answer:
tigry1 [53]2 years ago
4 0

Answer:

4/5

Step-by-step explanation:

Sin is opposite / hypotenuse

Sin x= 16/20

16/20= 4/5

You might be interested in
Describe the outliers from the scatter plot
natulia [17]
I believe there is only one outlier (shown in this picture) mostly because it is the farthest from this dotted mess
3 0
3 years ago
Find the area of the shaded region
kogti [31]

Answer:

  7. 183 in^2

  8. 192.42 m^2

  9. 239.4 ft^2

Step-by-step explanation:

7. The figure seems most easily seen as a trapezoid with a triangle removed. The trapezoid has bases of 26 and 14, and a height of 15. So, its area is ...

  A = (1/2)(b1 +b2)(h) = (1/2)(26+14)(15) = 300 . . . . . . square inches

The triangle has a base of 26 and a height of 9, so an area of ...

  A = (1/2)bh = (1/2)(26)(9) = 117 . . . . . . square inches

Then the shaded area is ...

  300 in^2 -117 in^2 = 183 in^2

__

8. The area of the donut can be found different ways. One way is to multiply the width of the shaded area (3.5 m) by the circumference of its centerline.

The centerline diameter is 21 m - 3.5 m = 17.5 m, so the circumference of that circle is ...

  C = πd = π(17.5 m) = 17.5π m

Then the area of the shaded part is ...

  (3.5 m)(17.5π m) = 61.25π m^2 ≈ 192.42 m^2

__

9. As in problem 7, this can be treated as a parallelogram less a triangle. Here, we need to do a little work to find the area of the triangle.

The triangle of interest is a right triangle with hypotenuse 23.8 ft and one leg 21 ft. The Pythagorean theorem can be used to find the other leg:

  h = √(23.8^2 -21^2) = √125.44 = 11.2

Then the area of the triangle is ...

  A = (1/2)bh = (1/2)(21)(11.2) = 117.6 . . . ft^2

The area of the parallelogram (including the triangle) is ...

  A = bh = (23.8 ft)(15 ft) = 357 ft^2

So, the shaded area is the difference ...

  357 ft^2 -117.6 ft^2 = 239.4 ft^2

_____

<em>Comment on significant digits</em>

The area in problem 8 may be considered to be 192.325 m^2 if you are required to use 3.14 as the value for pi. Since that value is only good to 3 significant digits, it is quite pointless to report the answer to 6 significant digits when using that value. It is quite reasonable to use 192 m^2 for the answer, especially if you're required to round to whole numbers.

8 0
3 years ago
20 points. Picture says it all.
Yuliya22 [10]

Answer:

AC line = DB line

Step-by-step explanation:

ac line is always larger that db line

6 0
3 years ago
I need help please and ty 2 questions in math for a lot of points
Vlad1618 [11]

Answer: ok we will help

Step-by-step explanation:

he need our help

4 0
3 years ago
Cound someone please help me on this, I'm stuck. ​
Katyanochek1 [597]

Negative exponents work like this:

a^{-b}=\dfrac{1}{a^b}

So, in order to evaluate a negative exponent, you simply have to invert the base, and then raise to the positive equivalent of the exponent.

As an example, here are the first three exercises:

8^{-3}=\dfrac{1}{8^3}=\dfrac{1}{512}

(-4)^{-5}=\dfrac{1}{(-4)^5}=-\dfrac{1}{1024}

2k^{-4}=\dfrac{2}{k^4}

You can work out the rest applying this logic.

5 0
3 years ago
Other questions:
  • B(n)=4-6(-1)<br> find the 4th term in the sequence
    15·1 answer
  • For what values of x does 25^x - 5^x2-3?
    8·2 answers
  • How many parts are there in the format of a two-column proof?
    14·2 answers
  • Will give BRAINLIEST!!!! Answer fast!!!
    7·1 answer
  • Plz help I need it ​
    13·2 answers
  • 21=cd+e for d solve for indicated variable
    14·2 answers
  • 2x + 11 = 5<br> If a and b are the solutions to the equation above, what is the value of |a – b| ?
    5·1 answer
  • Find the arc length of the semicircle. Enter an exact answer in terms of . units​
    12·1 answer
  • Please help me ASAP!!<br> Thx
    15·1 answer
  • Please help with all of question 5 ​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!