3x8 is 24 plus 4 is 28
7x1 is 7 plus 2 is 9
9+28 is 37
Answer:
8
Step-by-step explanation:
Probaility in general is defined as the ratio of positive outcomes over the total number of outcomes.
In the first example, the total outcomes are 16; let us count the positive ones. There are 8 even numbers from 1-16. The prime numbers are 2,3,5,7,11,13. Out of those, only 5 are odd. Hence, in total there are 13 positive outcomes. Thus, the probability is 13/16=81.25%
Let's restrict the problem to the students that studied for the exam; the proportion is 0.57 of the total students. 0.52 of the total students studied and saw an increase in their exam. Hence, the probability that a student who studied saw an increse is 0.52/0.57 (here a positive outcome is the proportion that saw an increase and the total outcomes are all the students that studied). 0.52/0.57=91.22%
Answer: 99cm^2
Step-by-step explanation:
The area of a parallelogram is the base*the height.
The base is 4+5 = 9 cm.
Therefore, the area of a parallelogram is 9*11 = 99cm^2
