3 years ago

Determine the general solution: sin 2x=-1/2

1 answer:

8 0

as sin (11pi/6) = -1/2

so

2x= 7pi/6+2npi
and

2x= 11pi/6 + 2npi

solve both of them for x and you will get your answer

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strojnjashka [21]

3x=4+13x=5x=5/32x=2* 5/32x=10/3

8 0

3 years ago

iragen [17]

Step 1: Find the slope:

$m= \dfrac{y_2-y_1}{x_2-x_1}= \dfrac{-2-7}{4-(-2)} = \dfrac{-9}{6}= -\dfrac{3}{2}$

This gives you $y=-\dfrac{3}{2}x+b$ , but we need to find b.

To find b, substitute in one (x,y) pair and it doesn't matter which one. I'll go with (4,-2):

$\begin{aligned}-2&=-\dfrac{3}{2}(4)+b\\[0.5em]-2&=-6+b\\[0.5em]4&=b\end{aligned}$

Now take that b-value and plug in into the slope-intercept form:

$y=-\dfrac{3}{2}x+4$

It's always a good idea to toss in the other x-value from the other point, to make sure it checks out.

7 0

3 years ago

Fed [463]

Answer:

hope this helps

Step-by-step explanation:

x > −5

7 0

3 years ago

Olegator [25]

Answer:

a-b=12

Step-by-step explanation:

(a²-b²)/(a+b) = 12

(a-b)(a+b)/(a+b)=12

a-b=12

3 0

2 years ago

ratelena [41]

Answer 8 here is why because 34 x8 is 184

3 0

2 years ago