5*2=10
10+12*4.5=64cm^2
Hope it helps
Answer:
0.077
Step-by-step explanation:
From the table :
Number of students aged 31 - 35 = 60
Number of students over 35 = 26
Total number of students = total possible outcomes = 1123
Required outcome = (students aged 31 - 35) + over 35 = 60 + 26 = 86
Probability = required outcome / Total possible outcomes
Probability (at least 31) = 86 / 1123 = 0.0765
= 0.077 (3 decimal places)
Answer:
8/25
Step-by-step explanation:
The total amount of tickets is 25 so divide 10 from 25 to figure out what you multiply by to get 25
--> 25/10 = 2.5
now multiply 2.5 x 3 to have a numerator which would be your probability of winners out of 25 tickets
--> 2.5 x 3 = 7.5 (round to the nearest whole number)
7.5 rounded to the nearest whole number --> 8
so you get 8 out of 25 = 8/25
Answer:
28.3 square inches
Step-by-step explanation:
In the question, we are asked to calculate the portion of the area of the cake eaten by Ellie’s sister.
To calculate this, the first thing to do is to calculate the area of the cookie cake. Now, since it’s a round cake, then it must be circular in shape.
Hence we calculate the area.
mathematically the area of a circle can be calculated using the formula;
A = pi * r^2
here our r =6 inches
Substituting this, we have
A = 22/7 * 6 * 6 = approximately 113 sq. inches
we now move on to calculate the portion ate, which is a quarter
That would be 1/4 * 113 = 28.3 sq. inches was eaten
