Answer:
22 x 20 is 440 ,
8x16 is 128 ,
440 - 128 is 312
Step-by-step explanation:
I THINK
The electric power of microwave is 900 watts.
Step-by-step explanation:
Given,
Voltage in the circuit = 120 volts
Current in the circuit = 7.5 amp
Electric power of microwave = Voltage*Current
Electric power of microwave = 
Electric power of microwave = 900 watts
Therefore,
The electric power of microwave is 900 watts.
Keywords: current, power, multiplication
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Answer:
number 3 is 30, number 4 is 46 and the last one is 55
The equation of the regression line is
=9.1006+(-0.2157)x and the point prediction of ammonium concentration for 25ml/h is
=3.7081
<h3>What is meant by regression line?</h3>
A regression line is an approximation of the line that describes the true, but unknown, linear connection between two variables. The regression line equation is used to predict (or estimate) the value of the response variable from a given value of the explanatory variable.
In statistical modeling, regression analysis is a collection of statistical techniques for estimating the associations between a dependent variable and one or more independent variables.
a)
=β₀+β₁x
Where,
β₁=
/
-------(1)
Where,
= -341.959231
1585.230769
By substituting these values in equation 1 we get,
β₁= -0.2157
β₀=
-β₁x
Where,
=∑
/n
∑
=52.8
n=13
Then,
=4.0615
=∑
/n
∑
=303.7
n=13
=23.3615
β₀=4.0615-(-0.2157)(23.3615)
=9.1006
Therefore, β₀=9.1006
The regression equation is
=9.1006+(-0.2157)x
If x=25,
=9.1006+(-0.2157)(25)
=3.7081
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