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
lapo4ka [179]
3 years ago
6

This quiz is due in a hour, I'll up the points and will also mark BRAINLIEST

Mathematics
1 answer:
padilas [110]3 years ago
3 0

Step-by-step explanation:

cosine=<u>Adjacent</u>

Hypotenuse

You might be interested in
How do you factorise x^2 - 9.
Zinaida [17]
X ^ 2 - 9

= x ^ 2 - 3 ^ 2

It turns into 3 ^ 2
Because 3 ^ 2 = 9

The final answer is
= ( x + 3 )( x - 3 )

remember the formula :

a^2 - b^2 =(a+b)(a-b)
4 0
3 years ago
Rowan baked 17 chocolate chip cookies and 9 sugar cookies for her class how many cookies does she have left
frez [133]

Answer: She has 8 cookies left

Step-by-step explanation:

17-9=8

6 0
2 years ago
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
Y=2/3(x-5)^2
Anvisha [2.4K]

Answer:

  see below

Step-by-step explanation:

The graph opens upward if the sign of the squared term is positive. If that sign is negative, the graph opens downward. The first three equations open upward; the last opens downward.

The line of symmetry is the value of x that makes the squared term zero. Here, that is x=5 for all equations.

<u>y=2/3(x-5)^2</u>:  A, D

<u>y=1/2(x-5)^2</u>:  A, D

<u>y=3/4(x-5)^2</u>:  A, D

<u>y=-4(x-5)^2</u>:  B, D

8 0
3 years ago
I need help fining X. I keep getting a negative number
KIM [24]

Answer:

3

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the equation. −10x + 1 + 7x = 37 x = −15 x = −12 x = 12 x = 15
    11·2 answers
  • Solve 2sin x + sqrt3 = 0
    7·1 answer
  • The length of the entire border of the Unites States is approximately 32,000 miles, 5 8 of which is coastline. How long is the c
    15·1 answer
  • Find the slope and the y- intercept of the line y=2x-6
    5·1 answer
  • Compare and contrast simplifying the numeric expression 3-(2+5) to the algebraic expression 3x-(2x+5)
    10·1 answer
  • Please help me with the question below!! PLEASEEEE
    7·2 answers
  • What is 11 x 15? plz help...
    13·2 answers
  • Jon scored 13 points during the first have of the game. What was his points per game?
    15·1 answer
  • Matt made the model below to help him solve his math problem. Write and expression that matches Matt’s Model.
    15·2 answers
  • Pigs have 4 legs and chicken have 2 legs. If there are 24 heads and 80 legs, how many pigs and chickens are there?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!