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
rusak2 [61]
3 years ago
7

What is the value of the missing angle??

Mathematics
1 answer:
Mice21 [21]3 years ago
4 0

Answer:

39°

Step-by-step explanation:

51° +? = 90°

? = 90° - 51°

? = 39°

Hope it helps you in your learning process.

You might be interested in
Please, I need help in this ??
nignag [31]

Answer:

\int\frac{x^{4}}{x^{4} -1}dx = x + \frac{1}{4} ln(x-1) - \frac{1}{4} ln(x+1)-\frac{1}{2} arctanx + c

Step-by-step explanation:

\int\frac{x^{4}}{x^{4} -1}dx

Adding and Subtracting 1 to the Numerator

\int\frac{x^{4} - 1 + 1}{x^{4} -1}dx

Dividing Numerator seperately by x^{4} - 1

\int 1 + \frac{1}{x^{4}-1 }\, dx

Here integral of 1 is x +c1 (where c1 is constant of integration

x + c1 + \int\frac{1}{(x-1)(x+1)(x^{2}+1)}\, dx----------------------------------(1)

We apply method of partial fractions to perform the integral

\frac{1}{(x-1)(x+1)(x^{2}+1)} = \frac{A}{x-1} + \frac{B}{x+1} + \frac{C}{x^{2} + 1}------------------------------------------(2)

\frac{1}{(x-1)(x+1)(x^{2}+1)} = \frac{A(x+1)(x^{2} +1) + B(x-1)(x^{2} +1) + C(x-1)(x+1)}{(x-1)(x+1)(x^{2} +1)}

1 = A(x+1)(x^{2} +1) + B(x-1)(x^{2} +1) + C(x-1)(x+1)-------------------------(3)

Substitute x= 1 , -1 , i in equation (3)

1 = A(1+1)(1+1)

A = \frac{1}{4}

1 = B(-1-1)(1+1)

B = -\frac{1}{4}

1 = C(i-1)(i+1)

C = -\frac{1}{2}

Substituting A, B, C in equation (2)

\int\frac{x^{4}}{x^{4} -1}dx = \int\frac{1}{4(x-1)} - \frac{1}{4(x+1)} -\frac{1}{2(x^{2}+1) }

On integration

Here \int \frac{1}{x}dx = lnx and \int\frac{1}{x^{2}+1 } dx = arctanx

\int\frac{x^{4}}{x^{4} -1}dx = \frac{1}{4} ln(x-1) - \frac{1}{4} ln(x+1) - \frac{1}{2} arctanx + c2---------------------------------------(4)

Substitute equation (4) back in equation (1) we get

x + c1 + \frac{1}{4} ln(x-1) - \frac{1}{4} ln(x+1) - \frac{1}{2} arctanx + c2

Here c1 + c2 can be added to another and written as c

Therefore,

\int\frac{x^{4}}{x^{4} -1}dx = x + \frac{1}{4} ln(x-1) - \frac{1}{4} ln(x+1)-\frac{1}{2} arctanx + c

4 0
3 years ago
Tia surveyed every third house in the locality to determine the number of people who own pets.
MrRissso [65]
I think it is c, I could be wrong though
4 0
3 years ago
Read 2 more answers
Write 4.5 as a mixed number.
Zolol [24]

Answer:

9/2

Step-by-step explanation:

4.5 = 4 1/2 = 9/2

7 0
3 years ago
Read 2 more answers
Jalan is going to the moon. To get there, he has to travel at a 70 degree angle of elevation. If the moon is straight above the
DerKrebs [107]

Answer: 212,836

Step-by-step explanation:

4 0
3 years ago
What is the value of x? (5 points)
Svetlanka [38]
30 + 2x = 90
2x = 60
x = 30

Answer:
x = 30
7 0
3 years ago
Other questions:
  • Consider a pattern that begins with 180 and each consecutive number is 19 less than the previous term. What are the first five t
    5·2 answers
  • each wheel on roller coaster turns around 3999 times during the ride ,each ride lasts 4 minutes . how many times will each wheel
    13·1 answer
  • Bankruptcy is a process when a lender tries to obtain money from an individual's employer to pay an unpaid debt.
    13·1 answer
  • Solve for X, and show the equation you would use to solve.
    8·1 answer
  • length of a rectangle is 4 inches less than its width, and its perimeter is 24 inches. Which of the following systems of equatio
    12·1 answer
  • Find the value of x in |2x_5|+7=20​
    14·1 answer
  • I will give brainliest and snap to whoever can help me(;´༎ຶٹ༎ຶ`)
    12·1 answer
  • Ramon scored 16 points at the volleyball game. That was 8 times as many as David scored. How many points did David score? (Hint:
    15·1 answer
  • HELP PLEASE!!!!!!!!!!!
    14·2 answers
  • A coffee cup collection includes four green cup, 8 blue cups, and two black cups. What is the probability of selection 2 black c
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!