Answer: 11
Students have both a brother and a sister
Step-by-step explanation:
I don't think probability should be used for this question because the answer is quite clear
So in a class of 25 students
5 students don't have a sibling
So 25-5=20
Total number of siblings=14+17=31 siblings in total
So 20 people have 31 siblings
31-20=11
So the answer should be 11
It is given that z varies directly with x and inversely with the square of y so it follows:
It is also given that z=18 when x=6 and y=2 so it follows:
So the equation of variation becomes:
Therefore the value of z when x=7 and y=7 is given by:
Hence the value of z is 12/7 or 1.7143.
Answer:
<em>18cm</em>
Step-by-step explanation:
Perimeter of triangle= a+a+a (side + side+ side)
Perimeter of triangle= 6 cm+6cm+6cm
Perimeter of triangle= 18cm
8x-12y=84
in slope intersept form or (y=mx+b) is
y=2/3x-7
