Answer:
x = 34
Step-by-step explanation:
This is a straight line so the sum of angles must be 180°
4x + 20 + x - 10 = 180 add like terms
5x + 10 = 180 subtract 10 from both sides
5x = 170 divide both sides by 5
x = 34
To calculate each angle we replace x with the value we found
4x + 20 ➡ 4×34 + 20 = 156
x - 10 ➡ 34 - 10 = 24
I beleive it is 14 and 1 quarter in.
Answer:
Step-by-step explanation:
a93 = 93 + 2(52 − 1)
a93 = 93 + 2(52 + 1)
a93 = 52 + 2(93 + 1)
a93 = 52 + 2(93 − 1)
Originally 52 - Get rid of the first 2
a93 = 52 + 2(93 + 1)
a93 = 52 + 2(93 − 1)
2 each week. - Annoying. That doesn't help.
a93 = 52 + 2(93 + 1)
a93 = 52 + 2(93 − 1)
We're not buying any new ones in the first week, so purchases are one down.
a93 = 52 + 2(93 − 1)
I think we made it.
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
To know more about regression line, visit:
brainly.com/question/7656407
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Answer:
first one
Step-by-step explanation:
move (n)x to the other side of the equation and then divide by n)y and then you have your equation and then find the graph that matches them
