Mean=np
36=(0.12)n
n=300
300 students were surveyed.
That's the way I answer in my country but I'm not sure about this solution is correct in your school or not.
Answer:
Step-by-step explanation:
1.5x^2+6x+.... so that it can be rewritten in the form a(x+b)^2
Let .... be C
1.5x^2+6x+C
=1.5(x^2+4x+(C/1.5))
Compare above with 1.5(x+2)^2 = 1.5(x^2+4x+4)
C/1.5=4
C=6
So the expression should be 1.5x^2+6x+6
It can be rewritten to 1.5(x+2)^2
Answer:
your handwriting is too worse I can't see it properly
Answer:
<em>Answer: B. XY</em>
Step-by-step explanation:
<u>Lines and Circles</u>
There are four lines in the figure:
OB =Radius: A segment from the center to the circumference
XY = Secant: A line that intersects the circle in two points
EF = Chord: A line segment that joins two points on the circle
XV and XB = Tangent: A line that touches the circle on one point and is perpendicular to the radius.
Answer: B. XY
