A sinusoid is cyclical and has a period or frequency.
y = sin x is a sinusoid, with a period of 2π.
y = √x is not a sinusoid.
y = cos x is a sinusoid with a period of 2π.
Answer: y = √x is not a sinusoid.
Answer:
∠R = 30°
Step-by-step explanation:
Because QP = QR, it is an isosceles triangle. So ∠R = ∠P
Step-by-step explanation:
We use tangent because it uses opposite over adjacent.
So,
tan 33 = x/46
or
46 * tan 33 = x
Type this into the calculator and you get around 29.87
Answer: $36 is discounted from the regular price
Step-by-step explanation:
<em>First, we need to take our given numbers</em>
<em>Originally </em><u><em>$90</em></u><em> </em>
<em>On sale for </em><u><em>%40</em></u>
<em>Let's now use this equation</em>
<em>90(n)</em>
<em>n will equal 0.40 due to it being %40 off</em>
<em>90(0.40)</em>
<em>$36</em>
Answer:

Step-by-step explanation:
Given
Round 0 1 2 3
Points 25 75 225 675
Required
Determine the equation
Let n = rounds and p = points.
So, we have:



The above shows a geometric progression.
So, we solve using

In 
n = 0 and p = 25
Substitute these values in 




In 
n = 1 and p = 75
Substitute these values in 


Substitute 25 for a

Make b the subject


So, we have:
and 
The equation
becomes
