Answer:
123123 3213123 12312 dasdsd aw dasd sda asdasd
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
B is the only answer that will ensure she gets graduate students in the sample without getting too few or too many.
Answer:
14 students
Step-by-step explanation:
Given
Let:
read a book
watched TV
So, we have:
-- total
Required
Students that did both (x)
This is calculated using:
So, we have:
This gives:
Open brackets
Collect like terms
<em>Hence, 14 students did both</em>
7v-v=12 subtract v from 7v to get 6v
6v=12 divide 12 by 6 to find variable
v=2
N/4 < -1 — we can multiply both sides with 4, so we dont have to deal with fractions.
N < -4
So, our N goes left from -4 on a number line.
-10x<-100 — divide both sides by 10
-x < -10
x > 10
X is from 10 rightwards.
5x>20 — divide both sides by 5
x > 4
X is rightwards from 4.
