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3 years ago

4 x 2 -3= equals what.

Mathematics

2 answers:

kompoz [17]3 years ago

7 0

Answer:

Step-by-step explanation:

4 x 2 - 3 =

8 - 3 =

First you'd do 4 x 2 = 8 from the 8 you use the remaining 3 and subtract

yaroslaw [1]3 years ago

4 0

Answer:

Step-by-step explanation:

4 x 2 - 3 =

8 - 3 =

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$r=0.77$ , $\hat{y}=770.50+39.37x$ and volume of cerebral brey matter for a child whose head circumference Z score at age 12 months was 1.9 is $\hat {y}=920.10$

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We attached a table below,

$(a)$ We attached a table below,

Therefore ,

correlation coefficient $r=\frac{\frac{1}{18}(21766.7)-(\frac{27.25}{18} )(\frac{13890}{18} ) }{\sqrt{\frac{1}{18} (59.8435)-(\frac{27.25}{18} )^2}\sqrt{\frac{1}{18}(10767400)-(\frac{13890}{18} )^2 } }$

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$b_1=r(\frac{\sigma_y}{\sigma_x} )\\ =(0.77)(\frac{\sqrt{\frac{1}{18} (10767400)-(\frac{13890}{18} )^2} }{\sqrt{\frac{1}{18}(59.8435)-(\frac{27.25}{18} )^2 } } )\\ =0.77(\frac{52.15}{1.02} )\\ =0.77(51.13)\\ =39.37$