We are asked to sum the two trinomials
. We can start by using the distributive property to remove the parenthesis, giving us
. Next, when we combine like terms, we get
. Hope this helped!
The LinReg line of best fit for this data set is ŷ = -1.24X + 0.66
<h3>What is regression line?</h3>
A linear regression line has an equation of the form Y = a + bX, where X is the explanatory variable and Y is the dependent variable.
Given:
(−5, 6.3),
(−4, 5.6),
(−3, 4.8),
(−2, 3.1),
(−1, 2.5),
(0, 1.0),
(1, −1.4)
Sum of X = -14
Sum of Y = 21.9
Mean X = -2
Mean Y = 3.1286
Sum of squares (SSX) = 28
Sum of products (SP) = -34.6
Regression Equation,
ŷ = bX + a
b = SP/SSX = -34.6/28 = -1.23571
a = MY - bMX = 3.13 - (-1.24*-2) = 0.65714
ŷ = -1.23571X + 0.65714
ŷ = -1.24X + 0.66
Learn more about regression line here:
brainly.com/question/7656407
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Answer:
$2.00
Step-by-step explanation:
If Zak is Buying 6 gallons, and he has a coupon for each gallon for $0.55 off, we need to first find how much he saved.
We can do this by calculating $0.55 (or 0.55) multiplied by 6. This answer is 3.30, or $3.30.
Now we add $3.30 to $8.70 to get the normal price for 6 gallons of fruit punch.
3.30 + 8.70 = 12.00, or $12.00
The normal price for 6 gallons of fruit punch is $12.00.
Now, we divide 12 by 6 to get the cost of one single gallon of fruit punch.
12/6 = 2
One gallon of fruit punch costs $2.00
Hope this helps! Have a great rest of your day! :)
Answer:
aNd?
tHeREs mORe..
Step-by-step explanation:
