Answer:
1020 students
Step-by-step explanation:
Given the trend line equation :
y = 0.1x + 18,
where y is the total number of staff members and x is the total number of students.
Using the equation, the predicted number of students in a school with 120 staffs ;
y = 120
y = 0.1x + 18
120 = 0.1x + 18
120 - 18 = 0.1x
102 = 0.1x
x = 102 / 0.1
= 1020 students
Answer:
Step-by-step explanation:
-1/2(x-6)-1/4(x-4)-(x-7)= ?
Simplify 1/4
1 ÷ 4 = 0.25
Simplify 1/2
1÷2 = 0.5
The lowest common denominator of this problem is 4
16 - 3(x) / 4 - ( x - 7)
44 - 7(x) / 4
-7(x)+44 = 0
-7 - 44 = -51
-7 - 0 = -7
-7(x) = 44
-7(-1)(x) = x
-1(44) = -44
44 ÷ 7 = 6.28
We have have one solution in this problem
So, therefore x = 44/7
Width is 70 because 310-30=280
280/4=70
