C + c - 14a + 15bm - 13a - 17bm
rearrange
c + c - 14a - 13a + 15bm - 17bm
combine like terms
2c - 27a - 2bm
And got my Math paper 4 IGCSE external tomorrow, thanks for posting this question that helped me more!
It would be something along the lines of y = p2.75 or p times 2.75
Answer:
at least 9 students in each cohort.
Step-by-step explanation:
Given that :
In a class, there are 25 students and each of them is either a sophomore, a freshman or a junior. We have to determine the number students in the same cohort.
Let us suppose there are equal number of students in each of the cohort.
Now let us assume that the number of the students in each cohort be 8, i.e. each as a freshman, a junior or a sophomore. Therefore, the total number in the all the cohorts will be 24 students only.
Thus, we can say that there are at least
freshman, at least
sophomore or at least
junior in each of the cohort.
hello ....
the equation of a plane that is ; ax+by+cz +d =0
the vector perpendicular to this plane is : V(a,b,c)
in this exercice ; a = -4 b= -4 c = -1
then: the equation of a plane that is ; -4x-4y-z +d =0
but the plane passing through the point (−2,−5,5) :
-4(-2)-4(-5)-(5) +d =0
23+d =0
d =-23
the equation of a plane is : -4x-4y-z-23 =0