If you have five red balls and five blue balls in a jar what’s the probability of the first ball being red?
2 answers:
Answer:
Step-by-step explanation:
Total number of red balls = 5
Total number of blue balls = 5
Total number of balls in jar = 5 + 5
= 10
Probability of the first ball being red = total number of the red ball/total number of balls in the jar
=
=
Therefore, the probability of the first ball being red = , 50% or 0.5 (in any way you are instructed to write it in)
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Answer:
two dice are thrown, so S = {(1,1); (1,2); (1,3); ...;(6,5); (6,6)} ---> 36
the sum is 2, 4, 6
sum = 2 --> (1,1) ---> 1
= 4 --> (1,3); (2;2); (3,1) ---> 3
= 6 --> (1,5); (2,4); (3,3); (4;2); (5,1) ---> 5
⇒ = 9/36 = 1/4
The given dimensions of 9.5, 6, 7, and 6.5 cm gives the following
perimeter and area of the trapezium.
- Perimeter: <u>29 cm</u>
- Area: <u>49.5 cm²</u>
The perimeter of a trapezoid is given as follows;
Perimeter = The sum of the lengths of the sides
Which gives;
Perimeter = 6 + 7 + 6.5 + 9.5 = 29
The perimeter of the trapezoid =<u> 29 cm</u>
- Perimeter: 29 cm
The area of the trapezoid is given as follows;
Which gives;
The area of the trapezoid = 49.5 cm²
- Area:<u> 49.5 cm²</u>
Learn more about the area and perimeter of geometric shapes here: