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Dvinal [7]
3 years ago
10

Find the value of 2m for m= 1,2 and 3

Mathematics
2 answers:
Nonamiya [84]3 years ago
7 0

Use the substitution method

Answers:

2m

2(1)

= 2

2(2)

= 4

2(3)

= 6

Montano1993 [528]3 years ago
5 0

Answer:2m2(1)= 22(2)= 4 2(3)= 6

Step-by-step explanation:

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Hello!

Given the variables

X₁: Weight of a safety helmet for racers

X₂: Price of a safety helmet for racers

Note, there is n= 17 observed values for each variable so for all calculations I'll use this number and disregard the 18 mentioned in the text.

a) Scatterplot in attachment.

b) If you look at the diagram it seems that there is a negative linear regression between the price and the weight of the helmets, meaning, the higher the helmet weights, the less it costs.

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n= 17; ∑Y= 6466; ∑Y²= 3063392; ∑X= 1008; ∑X²= 60294; ∑XY= 367536

Y[bar]= 380.35; X[bar]= 59.29

b= \frac{sumXY-\frac{(sumX)(sumY)}{n} }{sumX^2-\frac{(sumX)^2}{n} } = \frac{367536-\frac{1008*6466}{17} }{60294-\frac{(1008)^2}{17} } = -30.18

a= Y[bar]- bX[bar]= 380.35-(-30.18)*59.29= 2169.77

The estimated regression equation for the price of the helmets as a function of their weight is:

^Yi= 2169.77 -30.18Xi

I hope it helps!

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12 times 12 help please so work
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