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
n200080 [17]
3 years ago
7

Plsss i need help with this asap !!

Mathematics
1 answer:
pashok25 [27]3 years ago
7 0
It’s cool I need help too
You might be interested in
Each shape is divided into equal parts. select the shapes that show thirds. mark all that apply
Reika [66]

Answer:

Triangle,Circle,Square, 3 cubes

Step-by-step explanation:

5 0
3 years ago
Molly bought a pair of gloves and a skirt.
Troyanec [42]

Answer:

U think it's 2.4

Step-by-step explanation:

.48 ÷by 4 =2

20% of 12=2.4

5 0
3 years ago
The industrial and agricultural revolutions resulted in a decline in __________.
S_A_V [24]
The answer is <span>subsistence farming  you welcome </span>
3 0
3 years ago
Save me the headache
maxonik [38]

(9\sin2x+9\cos2x)^2=81

Taking the square root of both sides gives two possible cases,

9\sin2x+9\cos2x=9\implies\sin2x+\cos2x=1

or

9\sin2x+9\cos2x=-9\implies\sin2x+\cos2x=-1

Recall that

\sin(\alpha\pm\beta)=\sin\alpha\cos\beta\pm\cos\alpha\sin\beta

If \alpha=2x and \beta=\dfrac\pi4, we have

\sin\left(2x+\dfrac\pi4\right)=\dfrac{\sin2x+\cos2x}{\sqrt2}

so in the equations above, we can write

\sin2x+\cos2x=\sqrt2\sin\left(2x+\dfrac\pi4\right)=\pm1

Then in the first case,

\sqrt2\sin\left(2x+\dfrac\pi4\right)=1\implies\sin\left(2x+\dfrac\pi4\right)=\dfrac1{\sqrt2}

\implies2x+\dfrac\pi4=\dfrac\pi4+2n\pi\text{ or }\dfrac{3\pi}4+2n\pi

(where n is any integer)

\implies2x=2n\pi\text{ or }\dfrac\pi2+2n\pi

\implies x=n\pi\text{ or }\dfrac\pi4+n\pi

and in the second,

\sqrt2\sin\left(2x+\dfrac\pi4\right)=-1\implies\sin\left(2x+\dfrac\pi4\right)=-\dfrac1{\sqrt2}

\implies2x+\dfrac\pi4=-\dfrac\pi4+2n\pi\text{ or }-\dfrac{3\pi}4+2n\pi

\implies2x=-\dfrac\pi2+2n\pi\text{ or }-\pi+2n\pi

\implies x=-\dfrac\pi4+n\pi\text{ or }-\dfrac\pi2+n\pi

Then the solutions that fall in the interval [0,2\pi) are

x=0,\dfrac\pi4,\dfrac\pi2,\dfrac{3\pi}4,\pi,\dfrac{5\pi}4,\dfrac{3\pi}2,\dfrac{7\pi}4

5 0
3 years ago
Read 2 more answers
What expression is equivalent to the area of metal sheet required to make this square-shaped traffic sign?
AveGali [126]

Answer: \text{Area of the square shaped traffic sign }=16x^2+9+24x

Step-by-step explanation:

Given: The side of the square shaped traffic sign = 4x+3

We know that the area of square is given by:-

Area= side^2

Therefore, the area of the side of the square shaped field is given by:-

Area=(4x+3)^2

We know that , (a+b)^2=a^2+b^2+2ab

Therefore,

(4x+3)^2=(4x)^2+(3)^2+2(4x)(3)\\=16x^2+9+24x

Hence, \text{Area of the square shaped traffic sign }=16x^2+9+24x

3 0
3 years ago
Read 2 more answers
Other questions:
  • Draw a mapping diagram (0,-3) (4,12) (6,13) (7,0)​
    10·1 answer
  • What is 815.755 rounded to the nearest hundredth
    13·2 answers
  • A National Hockey League rink is 115 feet longer than it is wide. If the perimeter of the rink is 570 feet, find the dimensions
    9·1 answer
  • Felipe is saving money for a class trip. He already has saved \$250$250dollar sign, 250 that he will put toward the trip. To sav
    10·1 answer
  • What is 0.5 as a percent?
    15·2 answers
  • GUYS PLEASE HELP ME PLEASE HELP PLEASE PLEASE!!!
    13·2 answers
  • Can someone explain how to do problems like <br> (-2+4) or (4+ -6)
    5·2 answers
  • Who wanna tal.k? im b0red :P (also ima female w/ blond hair, blue eyes, and medium body type)
    13·2 answers
  • Graph this line using the slope and y-intercept: y = 1/9x + 4​
    11·1 answer
  • Which system of equations has the solution (4,−2)?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!