Answer:
See explanation
Step-by-step explanation:
The range of the cosine function is 
Therefore
is not defined.
Assuming your question is rather 
Then
in the second quadrant.


Subtract 1.3 million from 800,000 and you get ur answer
Answer:
13
Step-by-step explanation:
-1+4*2+2*3
=-1+8+6
13
-4 1÷5 - (- 13 1÷10)
first we should turn these into improper fractions by multiplying the whole number by the denominator then add the numerator.
4 × 5 = 20 + 1 = 21
13 × 10 = 130 + 1 = 131
(-21/5) - (-131/10)
To subtract fractions we want to find a common denominator so we can multiply the numerator and denominator of (-21/5) by 2 to get (-42/10)
(-42/10) - (-131/10)
Since we are subtracting a negative, that becomes a positive
(-42/10) + 131/10
131 - 42 = 89
89/10
Now we can change it back into a mixed fraction:
8 and nine-tenths or 8 9÷10
Answer: Option A
About 0.02 pounds
Step-by-step explanation:
We know that density is defined as:

Where
d is the density
m is the mass
v is the volume
We want to calculate the helium-air mass of a spherical balloon and we know its density and the diameter of the balloon.
Then we can calculate its mass.
1) We use the diameter of the spherical globe to calculate its volume.
The volume of a sphere is:

and

So


2) Use the density formula to find the mass



<em>The answer is 0.02 pounds</em>