We have that
2sin²<span>x - sinx - 3 = 0
</span>
Let
A------> sin x
so
2A²-A-3=0
using a graph tool-----> to resolve the second order equation
see the attached figure
the solutions are
A=-1
A=1.5------> is not solution because sin x <span>can not be 1.5
the solution is
A=-1
therefore
sin x=-1
x=arc sin(-1)=-90</span>°
the answer is
sin x=-1x=-90° or 270°
Answer:
x+3= 2x when x = 3
3+3 = 2*3
6= 6
They are not equal when x is any other number rather than 3
Answer:
The answer is 4a
Step-by-step explanation:
1) Simplify 4a² + 12a² to 16a².

2) Use this rule:


3) Since 4 × 4 is 16, the square root of 16 is 4.

4) Simplify.

<u>Therefor</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>4a</u><u>.</u>
Answer:
Here the given table,
Outcomes Red yellow blue Misses
Frequency 10 35 48 7

Here, Sample size = 100
Hence, By the above table,
The relative frequency of landing on red
=
The relative frequency of landing on yellow
=
The relative frequency of landing on blue
=
The relative frequency of landing on misses
=
Thus, the event of landing in red region has a relative frequency of 0.1,
which means the dart landed in red region about 10% of the time.
Step-by-step explanation:
In the picture above.
Number 2 I suppose that as a straight line
so , it becomes easy to solve for y angle.
I hope that it's a clear solution.