<span>4. Simplify the expression.
sine of x to the second power minus one divided by cosine of negative x</span>
<span>(1−sin2(x))/(sin(x)−csc(x))<span>
</span>sin2x+cos2x=1</span>
<span>1−sin2x=cos2x<span>
</span>cos2(x)/(sin(x)−csc(x))</span>
<span>csc(x)=1/sin(x)</span>
<span>cos2(x)/(sin(x)− 1/sin(x))= cos2(x)/((sin2(x)− 1)/sin(x))</span>
<span>sin2(x)− 1=-cos2(x)</span>
<span>cos2(x)/(( -cos2(x))/sin(x))
=-sin(x)</span>
<span>
the answer is the letter a)
-sin x
</span><span>
5. Find all solutions in the interval [0, 2π). (6 points)sin2x + sin x = 0</span> using a graphical tool
the solutions
x1=0
x2=pi
<span>x3=3pi/2
the answer is the letter </span><span>
D) x = 0, π, three pi divided by two</span>
Answer:
because length is same I hope it will help you please follow me
Since she runs 6
miles each day and there 7 days per week, you will have to multiply 6 times 7.
But since you have to use distributive properties, multiply like this (6)(7)
6 is equal to 
Now turn 7 into a fraction, so its 
Now multipy (6)()
Multiply the numerators, so its 7 * 13 which gives you 91 and multiply the denominators so its 1 * 2 which gives you 2.
Put that back into a fraction as 
Divde it to change it to a mixed number and the answer is 45
You just have to multiply 17.04 * 6.2 to get the answer. The answer is 105.648
<span>Simplifying
9x + -2y = 19
Solving
9x + -2y = 19
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '2y' to each side of the equation.
9x + -2y + 2y = 19 + 2y
Combine like terms: -2y + 2y = 0
9x + 0 = 19 + 2y
9x = 19 + 2y
Divide each side by '9'.
x = 2.111111111 + 0.2222222222y
Simplifying
x = 2.111111111 + 0.2222222222y</span>
