Since both variables are continuous, u can use the Pearson correlation coefficient. The higher the value, the more related are the two variables. Most probably; as one increases, the other increases as well (i.e. some positive r). So u need to see some high or medium-sized r (> 0.3) and it has to be significant (p-value < .05).
But be careful, a high IQ of the mother did not necessarily cause the high IQ in the Son. Nor the low IQ in the mother caused a low IQ in the Son. << NO Causal Relationship can be proved through your r >>
Causal relationships can be only examined through experimental designs, where the researcher can manipulate the X (independent variable) and notices the change in Y (dependent variable) after that.
Trinomial or polynomial would be acceptable.
Answer:
x = 37.1003638138
Step-by-step explanation:
Use cos = adjacent/hypotenuse
cos41 = 28/x
Multiply x on both sides to get it out of the denominator.
x · cos41 = 28/x · x
Now you have
x · cos41 = 28
Divide both side by cos41 to get x by itself.
x · cos41/cos41 = 28/cos41
Now divide
x = 28/cos41
x = 37.1003638138
Answer:
9
Step-by-step explanation:
Let x= number of cards in each set
4x-5=31 (add 5 to each side)
4x=36 (divide each side by 4)
x=9
