Smart enough to answer this question? Gracie, Mary, and Nancy each have a small collection of seashells. Gracie has 5 more than
1 1/4 times the number of shells Mary has. Nancy has 1 more than 1 1/2 times the number of shells Mary has. Gracie and Nancy have the same number of shells. If x is the number of shells Mary has, identify the equation that represents this situation and identify its solution. (isnt fraction is one and one fourths, second fraction is 1 and one halfs)
X = mary's shells g = 1 1/4x + 5 n = 1 1/2x+ 1 g = n
1 1/4x + 5 = 1 1/2x + 1 5/4x + 5 = 3/2x + 1...multiply by common denominator of 4, this will get rid of fractions...however, this is optional...u can work with fractions if u wish. 5x + 20 = 6x + 4 5x - 6x = 4 - 20 -x = - 16 x = 16....so Mary has 16 shells
X = mary's shells g = 1 1/4x + 5 n = 1 1/2x+ 1 g = n
1 1/4x + 5 = 1 1/2x + 1 5/4x + 5 = 3/2x + 1...multiply by common denominator of 4, this will get rid of fractions...however, this is optional...u can work with fractions if u wish. 5x + 20 = 6x + 4 5x - 6x = 4 - 20 -x = - 16 x = 16....so Mary has 16 shells
r=0 means there is zero correlation between the independent and dependent variables. Most likely, some other regression model will help to bring the value of r closer to -1 or 1 to show a strong correlation.
