His sister is 8 because twice his sisters age is 8+8=16 and 16+3=19
Answer:
The number of days the number will be greater than 60 is 45.
Step-by-step explanation:
Since there are 80 total numbers and a number of the day can be repeated, then there is the same chance each day of picking one of the numbers. There are 20 numbers greater than 60 between 1 and 80. So, the chances of picking a number greater than 60 each day is 20/80, or 1/4 (25%). This probability is the same each day and we would take the total number of school days (180) multiplied by this probability to get our predicted number of days the number would be greater than 60 during the school year. 180 x .25 = 45.
Answer: Mr. Wallace got close to them to find out there favorite place to eat lunch.
Step-by-step explanation:
Answer:
3.
Step-by-step explanation:
Answer:
The value of b is 5 if the parallelogram is a rectangle
Step-by-step explanation:
Mathematically, the diagonals of a rectangle are equal in value
Thus, for the given expressions to represent the diagonals of a rectangle, the two must be equal
To get the value of b that makes the two equal, we simply equate the two expressions
We have this as;
10/12(24b/5 - 36/5) = 2/3 (3b + 6)
opening the brackets, we have;
4b - 6 = 2b + 4
4b - 2b = 4 + 6
2b = 10
b = 10/2
b = 5