There are 8 footballs in a store cupboard; one is yellow and the others are white. A pupil takes 2 footballs out of the cupboard at random. What is the probability that one of them is the yellow ball?

1/8

Step-by-step explanation: because there is only one yellow ball and 8 balls total, you can write it as a ratio of 1/8

1/8

Step-by-step explanation:

the answer is 1/4

step-by-step explanation:

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33