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
Trava [24]
3 years ago
8

I need help with this problem

Mathematics
1 answer:
dalvyx [7]3 years ago
5 0

Answer:

it would be a big + and 1 -

Step-by-step explanation:

You might be interested in
Any idea on this please help
qwelly [4]
I think it might be 72+0?
8 0
3 years ago
Read 2 more answers
Write an equation of a line with the given slope and y-intercept. m = –5, b = –3. A. y = –5x – 3 . B. y = –5x + 3 . C. y = 5x –
True [87]
Y = mx + b
y = -5x -3

5 0
3 years ago
Read 2 more answers
What is the area of a regular 16-gon with a radius of 15 feet? Round your answer to the nearest tenth.
Sedbober [7]

Split up the 16-gon into 16 congruent isosceles triangles. Cut each of these isosceles triangles in half to get a right triangle.

The radius of the 16-gon corresponds to the hypotenuse of any of these 32 right triangles. As you probably know, the area of a triangle is half the product of its base and height. For a right triangle, the base and height can be taken to be the two legs. So you need to find their lengths.

Recall that the exterior angles of any convex polygon sum to 360º in measure. For a regular polygon, these angles are all congruent. There are 16 of them in this case, so they each have measure (360/16)º = 22.5º.

Interior angles are supplementary to exterior angles, which means each interior angle of the 16-gon has measure (180 - 22.5)º = 157.5º.

When we split up the 16-gon into isosceles triangles, the "base angles" are equal in measure to half the measure of the interior angles, since each hypotenuse bisects the interior angle. So each base angle has measure 78.75º.

In each right triangle, we then have base <em>b</em> and height <em>h</em> such that

sin(78.75º) = <em>h</em>/15

cos(78.75º) = <em>b</em>/15

Solve for <em>h</em> and <em>b</em> to get

<em>b</em> = 15 cos(78.75º)

<em>h</em> = 15 sin(78.75º)

Then the area of each right triangle is

1/2 <em>b h</em> = 225/2 sin(78.75º) cos(78.75º) = 225/4 sin(157.5º)

and so the area of the 16-gon is

32(1/2 <em>b h</em>) = 1800 sin(157.5º) ≈ 688.8 sq. ft.

4 0
3 years ago
Calling All Mathematicians Please Please Please Help On This Question!!!!!!!!!!!!!!
Fiesta28 [93]
Use the distance formula, AB=√[(1-(-9)]²+[(-1-(-3)]=√[100+4]=√104
use the same formula, AC=√52, BC=√52
AC²+BC²=52+52=104=AB²
Yes, it is a right triangle. 
8 0
3 years ago
What type of triangle do i have if the angles are:15, 10,155
xenn [34]
Obtuse, accute, obtuse, acute, A.
6 0
3 years ago
Other questions:
  • A copy machine makes 28 copies per minute. How many copies does it make in 5 minutes and 45 seconds?
    13·1 answer
  • How manyseconds in a quarter day?
    10·1 answer
  • What factor is paired with 6 to give 24
    7·2 answers
  • Find the last year salary if, after a 4% pay raise , this year salary is $ 36,920
    12·1 answer
  • What is the variable in this expression?
    6·1 answer
  • How do I write 3(x+2) in the simplest form
    8·2 answers
  • can someone tell me the answer to this????
    13·1 answer
  • Help brainly fast giving brainlist
    12·2 answers
  • Which function has a greater rate of change?​
    14·1 answer
  • Find the volume of the pyramid
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!