This is the concept of algebra, to solve the expression we proceed as follows;
cos 2x-cosx=0
cos 2x=cosx
but:
cos 2x+1=2(cos^2x)
thereore;
from:
cos 2x=cos x
adding 1 on both sides we get:
cos 2x+1=cos x+1
2(cos^2x)=cosx+1
suppose;
cos x=a
thus;
2a^2=a+1
a^2-1/2a-1/2=0
solving the above quadratic we get:
a=-0.5 and a=1
when a=-0.5
cosx=-0.5
x=120=2/3π
when x=1
cos x=1
x=0
the answer is:
x=0 or x=2/3π
Answer:
i hope <em>this </em><em>will</em><em> help</em><em> </em>you
Answer:
C. 4 miles; it represents the original distance of the bee from its hive
Step-by-step explanation:
We are given,
The graph showing the distance between a bee hive for a certain amount of time.
Now, from the graph, we see that,
When the time is 0 mins, then the distance from the bee hive is 4 miles.
<em>Thus, the initial value of the graph is 4 miles and it represents the original distance of the bee hive from the hive.</em>
So, option C is correct.
Answer: 7
Explanation: both triangles are congruent, so the mid segment is half of 14
Answer: g = -4 and h =1 or g= -1 and h = -2
Step-by-step explanation:
If two exponents have the same base and are multiplied together, you will keep the base unchange and add the exponents.
So looking at the equation, the base is 2 for both and they are raised to the powers g and h, meaning that if g and h are added together they have to equal -3.
So find two numbers that their sum is -3.
For example, -1 and -2 add up to -3, -4 and 1 add up to -3.
