To find the probability of A or B, add the two probabilities (since they are mutually exclusive).
P(A)= 1/6 since 3 is one possibility out of 6
P(B)= 1/2 since there are 3 numbers that mke this true out of 6 and 3/6= 1/2
P(A or B)= 1/6+1/2
P(A or B)= 2/3
Final answer: 2/3
The minimum number of T-shirt that they must sell to raise $500 is 67 T-shirts
Let x represent the number of Pi Day T-shirts sold.
They are selling Pi Day T-shirts for $7.50 each, So to raise $500:
7.5x > 500
Dividing through by 7.5:
7.5x / 7.5 > 500 / 7.5
x > 66.7
Hence, the minimum number of T-shirt that they must sell to raise $500 is 67 T-shirts
Find out more at: brainly.com/question/25285332
Answer:
1. 8
2. -1/2
i dont know how to do the other problems, but i did know how to solve the 1st 2 questions. hope it helped :)
Step-by-step explanation:
(x + 3) (x + 2) = 0
To solve it, the most appropriate technique is:
1.) zero product property
The solutions are:
(x + 3) = 0
x = -3
(x + 2) = 0
x = -2
x² + 6 = 31
To solve it, the most appropriate technique is:
2.) square root property
x² = 31-6
x² = 25
x = +/- root (25)
x = +/- 5
The solutions are:
x = 5
x = -5
No.of stamps Billy had = 55
Number of stamps Billy's older brother had = 73
So total number of stamps two brother have together = 73 + 55
= 128