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
gregori [183]
3 years ago
5

This should be quick answer pls help

Mathematics
1 answer:
stiks02 [169]3 years ago
5 0

Answer:

3+18=21

Step-by-step explanation:

because 3x6 is 18, and 18+3 is 21.

You might be interested in
What value of x makes the following equation true?<br><br> x3=−64
Iteru [2.4K]

Answer:

-18.50490621

Step-by-step explanation:

To solve, take -64/3.

5 0
3 years ago
Read 2 more answers
How to solve this trigonometric equation cos3x + sin5x = 0
mrs_skeptik [129]

Answer:

  x = {nπ -π/4, (4nπ -π)/16}

Step-by-step explanation:

It can be helpful to make use of the identities for angle sums and differences to rewrite the sum:

  cos(3x) +sin(5x) = cos(4x -x) +sin(4x +x)

  = cos(4x)cos(x) +sin(4x)sin(x) +sin(4x)cos(x) +cos(4x)sin(x)

  = sin(x)(sin(4x) +cos(4x)) +cos(x)(sin(4x) +cos(4x))

  = (sin(x) +cos(x))·(sin(4x) +cos(4x))

Each of the sums in this product is of the same form, so each can be simplified using the identity ...

  sin(x) +cos(x) = √2·sin(x +π/4)

Then the given equation can be rewritten as ...

  cos(3x) +sin(5x) = 0

  2·sin(x +π/4)·sin(4x +π/4) = 0

Of course sin(x) = 0 for x = n·π, so these factors are zero when ...

  sin(x +π/4) = 0   ⇒   x = nπ -π/4

  sin(4x +π/4) = 0   ⇒   x = (nπ -π/4)/4 = (4nπ -π)/16

The solutions are ...

  x ∈ {(n-1)π/4, (4n-1)π/16} . . . . . for any integer n

5 0
3 years ago
Which statement correctly describes the end behavior of y = 3x8 + 5x2 +2x - 1
zmey [24]

Answer:

C)  The graph rises to the left and rises to the right.

Step-by-step explanation:

The highest expone tis even and it's coefficient is positive

therefor

The graph rises to the left and rises to the right.

5 0
2 years ago
Three times the sum of a number and 2<br> is 7
Ainat [17]
3(x+2)=7 X=1/3 Because 3(x+2) would simplify to 3x+6=7 and then its a two-step equation
8 0
2 years ago
Read 2 more answers
Solve the slope for the table.
Nikitich [7]

Answer:

The slope is 0

Step-by-step explanation:

All y-values are equal to 5 meaning the graph is a straight horizontal line. Slope is the rate at which a graph increases or decreases. Seeing as this graph doesn't do so, the slope is 0.

3 0
2 years ago
Read 2 more answers
Other questions:
  • Compare the value of the 3 in 6300 and 530
    7·1 answer
  • What is m∠G ?
    14·2 answers
  • What is the volume?<br> 9 m<br> 19 m<br> 7 m
    9·2 answers
  • Lauren's suv was detected exceeding the posted speed limit of 60 kilometers per hour, how many kilometers per hour would she hav
    14·1 answer
  • How do the rules for adding and subtracting signed decimals compare with the rules for adding and subtracting integers?
    11·1 answer
  • What is the area of this trapezoid?
    8·2 answers
  • WILL GIVE BRAINLYIST!!!<br> Apples are ____% of the total number of fruits.
    6·1 answer
  • What do we call a polynomial with 5 terms
    9·1 answer
  • -72.5 rational or irrational
    14·1 answer
  • Please help ive been stuck here for 40 minutes :(
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!