Answer:
independent quantitative.
Step-by-step explanation:
An indepentent variable in an investigation, is the variable that will be changed in order to know how its variation affects the dependent variable.
In this case, the dependent variable is the test scores since Dr Washington will study there is the numeber of hours of study affects the grade the students obtain.
Therefore, the hours of study are the independent variable.
It is also a quantitative variable since it can be counted.
I unit rate is a normally a fraction with a denominator of one.
How to find a unit rate...
50 miles / 5 hours ÷ 5 (divide by the denominator) = 10 miles/1 hour
10 miles / 1 hour is a unit rate.
HOPE THIS HELPED :)
Answer:
C
Step-by-step explanation:
the area of a triangle is found by using the formula 
there for its (14x5) 0.5 which equals 35
First quartile of the distribution is, Q = 39.
i.e 75% of students have scored more than 39.
So, total number of students scored more than 39 are :
Therefore, number of students scored higher than 39 are 312.
Hence, this is the required solution.
