<span>The curve formed by a quadratic equation is called a PARABOLA</span>
Because it says "not black" we would do white marbles
There are 15 white marbles and a total of 20
So the fraction of white marbles to total would be 15/20
Because the answer is wanted as a decimal divide 15 by 20
15/20=.75
There is a .75 chance that she will not draw a black marble
Answer: 1&8
Step-by-step explanation:
1+8=9
8-1=7
Answer:
The mode is twelve.
Step-by-step explanation:
The mode of a data set is the number that appears the most often. I've added an attachment so that you might be able to see some examples.
C = number of parents
c+9 = number of children
2c+9=25
2c=16
c=8
8 parents, 17 children