Answer:
286 students attended
148 non students attended
Step-by-step explanation:
Given




Solving (a): Number of students
Represent students with S and non students with N
So:
--- (1)
--- (2)
Make N the subject of formula in (1)

Substitute 434 - S for N in (2)

Open Bracket

Collect Like Terms


Divide through by -2

<em>Hence; 286 students attended</em>
Solving (b):
Recall that



<em>148 non students attended</em>
Answer:
= 6 over 23 (or = 6/23
Step-by-step explanation:
Convert mixed numbers to improper fractions 3 5/6 = 23/6
Convert element to fraction
= 1 divide 23/6
Apply the fraction rule: a/b divide c/d = a/b x d/c
= 1 over 1 (or 1/1) divide 23/6
Apply rule a/a = 1
= 1 over 1 (or 1/1) x 6/23
Multiply 1x 6/23 = 6/23
= 1 x 6/23
ANSWER 6/23
Hope this helps!
Answer:
1. c 2. a 3. b
Step-by-step explanation:
Answer: Choice C)
--------------------------------------
mean = xbar = (2400+1750+1900+2500+2250+2100)/6
mean = 2150
Subtract the data values from the mean to get
2400-2150 = 250
1750-2150 = -400
1900-2150 = -250
2500-2150 = 350
2250-2150 = 100
2100-2150 = -50
The differences are: 250, -400, -250, 350, 100, -50
Then you square those values and add up the squares
(250)^2 + (-400)^2 + (-250)^2 + (350)^2 + (100)^2 + (-50)^2 = 420,000
<u>Positive</u> numbers are located to the right of zero on the <u>number</u> line