Answer:
Step-by-step explanation:
Given: The total number of candies in the bowl = 10
The number of blue candies = 3
The probability to grab first candy he grab is blue is given by:-
Since, before the second candy drawn he put back the first ball in the bowl , therefore both the events of grabbing blue candy are independent.
The probability that both candies he grabs are blue is given by:-
Answer:
Step-by-step explanation:
Given
Required
Determine the total length
Since, he ribbons are of the same lengths.
The total length is calculated as:
Answer:
117
Step-by-step explanation:
First think of the square that was removed. All 4 sides are equal but you don't know the length so lets gives them the variable X.
So to find the area of the rectangle, insert those variables into the area equation for a rectangle.
(RV + (X) ) (PT +(X)) = rectangle area
Now you are given what the area is if you remove the square. So subtract the the square's area from the equation above and set it equal to the size they told you.
(RV + (X)) (PT + (X)) - [(X)(X)] = 92
rectangle - square = remaining area
Now plug in the numbers you know and solve for X.
(8 + X) (4 + X) - ((X)(X)) = 92
Use FOIL to multiply the first part of the equation (first, outer, inner, last)
32 + 8x + 4x + -
= 92
32 + 12x = 92
12x = 60
x = 5
So now you know the size of the square. Each side is 5m. So add 5m onto the top of the rectangle and onto the side. The top is 13m and the side is 9m. The area of the rectangle is the length times the height to 13 x 9 which is 117