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
Goshia [24]
4 years ago
14

In a right triangle ABC, angle C is a right angle and cos B =255/257.

Mathematics
1 answer:
butalik [34]4 years ago
8 0

Answer:

C

Step-by-step explanation:

Given

cosB = \frac{adjacent}{hypotenuse} = \frac{BC}{A B} = \frac{255}{257}

Then the hypotenuse AB = 257 and BC = 255

sinA = \frac{opposite}{hypotenuse} = \frac{BC}{AB} = \frac{255}{257}

A = sin^{-1} (\frac{255}{257}) = 82.8° → C

You might be interested in
N^2 + 36n + c "find the value of c that completes the square"
RSB [31]

For this case we have the following polynomial:

n ^ 2 + 36n + c

To find the value of c that completes the square, we use the following equation:

c = (\frac {b} {2}) ^ 2

Where,

  • <em>b: coefficient of the variable of degree 1 </em>

Substituting values we have:

c = (\frac {36} {2}) ^ 2\\c = (18) ^ 2\\c = 324

Answer:

the value of c that completes the square is:

c = 324

8 0
4 years ago
31*r+1.1*(35−31)*r = 410.64.
Rasek [7]

Answer:

11.6

Step-by-step explanation:

<u>Solving with steps as below:</u>

  • 31*r+1.1*(35−31)*r = 410.64
  • 31r + 1.1*4r = 410.64
  • 31r + 4.4r = 410.64
  • 35.4r = 410.64
  • r = 410.64/35.4
  • r = 11.6

<u>Answer is:</u> r =11.6

5 0
3 years ago
Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. 3x + 2y = 6
Elanso [62]

The solution set for the system of equations contains one point

The system of the equations has one solution

Step-by-step explanation:

The system of the linear equations has:

  • 1 solution if the 2 lines that represent the equations intersect each other in one point
  • No solution "{}" if the 2 lines that represent the equations are parallel
  • Infinite solutions if the 2 lines that represent the equations are coincide (same line)

→ Intersected lines have different slopes

→ Parallel lines have same slopes and different y-intercepts

→ Coincide lines have same slopes and same y-intercepts

Let us put each equation in the form y = m x + c, where m is the slope

and c is the y-intercept

∵ 3x + 2y = 6

- Subtract 3 x from each side

∴ 2y = 6 - 3 x

- Divide both sides by 2

∴ y = 3 - 1.5 x

∴ y = -1.5 x + 3

∵ y = m x + c

∴ m = -1.5 and c = 3

∵ x - y = 2

- Subtract x from both sides

∴ -y = 2 - x

- Divide both sides by -1

∴ y = -2 + x

∴ y = x - 2

∵ y = m x + c

∴ m = 1 and c = -2

∵ The two equations have different slopes

∴ The two line are intersected in a point

∴ The system of the equations has one solution

The solution set for the system of equations contains one point

The system of the equations has one solution

Learn more:

You can learn more about the system of equations in brainly.com/question/13168205

#LearnwithBrainly

7 0
4 years ago
Adding Polynomial Functions Let f(x)=6x2+10x-7 and g(x)=2x2+4x. Solve for f(x) + g(x). O 12x2+40X-7 0-8x?-14x+7 O 8x+14x-7​
nevsk [136]
Wow your teacher did u wrong with that math problem dang
7 0
3 years ago
Please help with this 
Svetlanka [38]
Put this into google: “height of cone formula” I know I know we were all there at some point
4 0
3 years ago
Other questions:
  • There are 20 parrots at the animal sanctuary. Their population is increasing at a rate of 15% per year. There are also 24 snakes
    11·1 answer
  • A store advertises that it is offering a 14% discount on all articles purchased at the store. if yao pays $670.80 for an article,
    12·1 answer
  • You wrap a wire around a piece of iron. If you slowly increase the strength of an electric current flowing through the wire, you
    12·2 answers
  • Jane decided she would spend the
    12·1 answer
  • Which describes the range of the parent absolute value function?
    5·1 answer
  • Ms.Kitts works at a music store. last week she sold six more than three times the number of CDs that she sold this week. Ms.kitt
    13·2 answers
  • Helppppppppppppp. a and b partttt​
    8·1 answer
  • Can someone PLZZ help me!!!?
    6·1 answer
  • Can someone please explain C-12=-4 to me
    11·2 answers
  • Identity the triangle congruence postulate (SSS,SAS,ASA,AAS, or HL) that proves the triangles are congruent. I will mark brainli
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!