Answer:
1. n(4.75+30+2.50)
2. 4.75n+30n+2.50n
Step-by-step explanation:
n is the number of shirts they buy. It says that each shirt costs $4.75, and for each shirt they add an extra $30 and $2.50 for the setup fee and to peint each shirt. The word each shows that you have to times. You have to times n by each number or to make it shorter put all three numbers in parenthesis put the n ouside of the parenthesis.
Hope that helps.
The answer to ur question is 0.396
2.2% * 18 = 0.396
Answer:
Ordinal
Step-by-step explanation:
Level of measurement used in statistics summarizes what statistical analysis that is possible. There exist three types of level of measurement. The nominal, ordinal and Interval/Ratio level of measurement. Here, our primary focus will be the Ordinal level of measurement.
Ordinal level of measurement indicates the position in a sequence. In the military sector, the officer's rank is said to be Ordinal. This implies that the ordinal level of measurement categorizes variables according to hierarchy or ranks with a meaningful order. Still, the intervals and differences between the variables may not be equal.
we are given
![r(t)=(7t,3cos(t),3sin(t))](https://tex.z-dn.net/?f=r%28t%29%3D%287t%2C3cos%28t%29%2C3sin%28t%29%29)
we can find x , y and z
![x=7t,y=3cos(t),z=3sin(t))](https://tex.z-dn.net/?f=x%3D7t%2Cy%3D3cos%28t%29%2Cz%3D3sin%28t%29%29)
now, we can use arc length formula
![L=\int\limits^a_b {\sqrt{(x')^2+(y')^2+(z')^2} } \, dt](https://tex.z-dn.net/?f=L%3D%5Cint%5Climits%5Ea_b%20%7B%5Csqrt%7B%28x%27%29%5E2%2B%28y%27%29%5E2%2B%28z%27%29%5E2%7D%20%7D%20%5C%2C%20dt)
now, we can find derivative
![x'=7,y'=-3sin(t),z'=3cos(t))](https://tex.z-dn.net/?f=x%27%3D7%2Cy%27%3D-3sin%28t%29%2Cz%27%3D3cos%28t%29%29)
now, we can plug values
and we get
![L=\int _{-2}^2\sqrt{7^2+\left(-3\sin \left(t\right)\right)^2+\left(3\cos \left(t\right)\right)^2}dt](https://tex.z-dn.net/?f=L%3D%5Cint%20_%7B-2%7D%5E2%5Csqrt%7B7%5E2%2B%5Cleft%28-3%5Csin%20%5Cleft%28t%5Cright%29%5Cright%29%5E2%2B%5Cleft%283%5Ccos%20%5Cleft%28t%5Cright%29%5Cright%29%5E2%7Ddt)
![L=\int _{-2}^2\sqrt{7^2+9}dt](https://tex.z-dn.net/?f=L%3D%5Cint%20_%7B-2%7D%5E2%5Csqrt%7B7%5E2%2B9%7Ddt)
![=\sqrt{58}\cdot \:2-\left(-2\sqrt{58}\right)](https://tex.z-dn.net/?f=%3D%5Csqrt%7B58%7D%5Ccdot%20%5C%3A2-%5Cleft%28-2%5Csqrt%7B58%7D%5Cright%29)
...........Answer
Answer:
x greater than or equal to 12cm^2
Step-by-step explanation: