Help pls ill give brainliest

Mathematics

1 answer:

Degger [83]2 years ago

8 0

X > two is the right answer

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Solve the equation on the interval [0,2π). cos^4x=cos^4xcscx

Alisiya [41]

$\bf cos^4(x)=cos^4(x)csc(x)\\\\
-----------------------------\\\\
cos^4(x)=cos^4(x)\cfrac{1}{sin(x)}\implies cos^4(x)=\cfrac{cos^4(x)}{sin(x)}
\\\\\\
cos^4(x)sin(x)=cos^4(x)\implies cos^4(x)sin(x)-cos^4(x)=0
\\\\\\
cos^4(x)[sin(x)-1]=0\to 
\begin{cases}
cos^4(x)=0\to x=cos^{-1}(0)\\
----------\\
sin(x)-1=0\\
sin(x)=1\to x=sin^{-1}(1)
\end{cases}$

$\bf \measuredangle x = cos^{-1}(0)\implies \measuredangle x = 
\begin{cases}
\frac{\pi }{2}\\\\
\frac{3\pi }{2}
\end{cases}
\\\\\\
\measuredangle x=sin^{-1}(1)\implies \measuredangle x=\frac{\pi }{2}$

3 0

3 years ago

2/3 to the fourth power

Stella [2.4K]

The correct answer is 16/81. Hope this helps.

5 0

3 years ago

Read 2 more answers

(PLEASE HELP!!! THIS IS TIMED!! I WILL MARK THE BRAINIEST IF YOUR ANSWER IS CORRECT!!!)

konstantin123 [22]

Answer:

y=3x-1

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

-3(-4n + 30) = -30 need help

DIA [1.3K]

First we will do -3 times everything in the parenthesis.

-3 times -4n = 12n

-3 times 30 = -90

SO,

12n - 90 = -30

+90 +90

12n = 60

divide 12 on both sides;

n = 5

This is your answer,

IF THIS HELPED, PLS GIVE ME BRAINLIEST!

6 0

2 years ago

The diameter of a bicycle wheel is 2 feet.About how many revolutions does the wheel make to travel 2 kilometers?Explain.Hint 1 k

RSB [31]

We can work out the circumference of the wheel by using the equation

C = πd

C = π × 2
C = <span>6.28318530718
C = 6 feet

If 1km is 3280 feet, 2km is 6560 feet

6560 </span>÷ 6 = <span>1093.33333333 (recurring)
= 1093

Therefore the bike wheels rolls (approximately) 1093 times to cover 2km.
</span>

8 0

3 years ago