First solve the slope, mm = ( y1 - y2 ) / ( x1 - x2 )m = ( 3555 - 3240 ) / ( 1 - 8 ) m = - 45 gal / day
then solve the y intercept, by = mx + b
3555 = (-45)(1) + b3555 = -45 + bb = 3555 + 45b = 3600
so day 50
y = -45x + 3600y = -45(50) + 3600y = 1350 gal
Answer:
z = -1.66
Step-by-step explanation:
Z-statistic:
In which X is the found proportion.
p is the mean proportion.
is the standard error for the data.
Out of 593 students who replied to her survey, 64 fit this criterion.
This means that 
She finds that the proportion of binge drinkers nationally is 13.1%.
This means that 
Also
The z statistic for this data is
Answer: Hello mate!
A direct variation implies that, if y is the dependent variable that varies with the variable x; then: y = k*x where k is a real number.
An inverse variation has the form y = k/x where also k is a real number.
them, if we define s as the hours that Bob spends studying, and b as the hours that he spends playing baseball, then the equation that represents the score is:
Score(s,b) = k*s/b
we know that if s = 6, and b = 7, then the score is 72; with this information, we could obtain the value of the constant k.
score(6,7) = 72 =k*6/7 = k*
then k = 72*(7/6) = 61.7
now if s = 4 and b = 6, the score that he should expect is:
score( 4, 6) = 61.7*(4/6) = 41
