Answer:

Step-by-step explanation:

State that the values where cos x is minimum:






The pictures may be in a different order for you but it’s the 3rd graph where the minimum is (-4,-1)
Answer:
Some other names that we use for rectangles are parallelograms, quadrilaterals, and polygons.
So, 3 different names.
Hope this helps!
Answer:
If she only ate 5 she'll need to get 3 more to keep up her streak of eating 8 cracker.
Step-by-step explanation:
8-3=5 is an equation you'd use.
Answer:
The population mean is 5 volts
Step-by-step explanation:
Output voltage is assumed to be normally distributed, with standard deviation 0.25 Volts
s=0.25
n = 8

Sample mean = 
Since n < 30 and population standard deviation is unknown
So, we will use t test
Formula : 

t=-1.69
Refer the t table for p value
Degree of freedom = n-1 = 8-1 = 7
So,
P value >α
So, We are failed to reject null hypothesis
Hence The population mean is 5 volts