<span>A. y=secx
This problem deals with the various trig functions and is looking for those points where they are undefined. Since the only math operations involved is division, that will happen with the associated trig function attempts to divide by zero. So let's look at the functions that are a composite of sin and cos.
sin and cos are defined for all real numbers and range in value from -1 to 1.
sin is zero for all integral multiples of pi, and cos is zero for all integral multiples of pi plus pi over 2. So the functions that are undefined will be those that divide by cos.
tan = sin/cos, which will be undefined for x = π/2 ±nπ
cot = cos/sin, which will be undefined for x = ±nπ
sec = 1/cos, which will be undefined for x = π/2 ±nπ
csc = 1/sin, which will be undefined for x = ±nπ
Now let's look at the options and pick the correct one.
A. y=secx
* There's a division by cos, so this is the correct choice.
B. y=cosx
* cos is defined over the entire domain, so this is a bad choice.
C. y=1/sinx
* The division is by sin, not cos. So this is a bad choice.
D. y=cotx,
* The division is by sin, not cos. So this is a bad choice.</span>
You start by adding 4 to both sides, isolating the X. then you have your answer X < 3
Area= length x width; 40= 4x so x= 10cm
y will equal x-6.1cm -> 10cm-6.1cm= 3.9cm
Answer:
165.00 dollars
Step-by-step explanation:
To find the decimal form of a percentage, you divide by 100. If you have a decimal, then to divide by 100 just move the decimal 2 places to the left.
0.4% = .004
Now to turn it into a fraction, just read the place value...
four one thousandths = 4/1000
Now reduce... 4/1000 = 2/500 = 1/250
The simplest form of 0.4% as a fraction is... 1/250
