Answer: 220
Step-by-step explanation:
When we wanto to create a group of K elements for a set of N elements (where the order of the K elements does not matter, so we do not considerate the permutations of the K elements), the number of possible combinations is:
Here N = 12 and K = 3
So there are 220 possible combinations
The formula excerpt is an excel syntax which sums the value the values in cell A1 and 2. Hence, the output displayed in A4 will be 12
Excel begin with the equal to sign (=). The expression adds the value in A1 and 2.
Since, the value in A1 = 10
What the expression does is ; 10 + 2 = 12.
Therefore, the output displayed in cell A4 is 12.
Answer:
20 units
Step-by-step explanation:
see image
Answer:0,infinity
Step-by-step explanation:
let length = x
width is 7 feet less than length
width = x-7
area = length *width
area = x(x-7)
170=x²-7x
x²-7x-170=0
x²-17x+10x-170=0
x(x-17)+10(x-17)=0
(x-17)(x+10)=0
x=17 or x=-10
since length cannot be negative so x=17
and width =x-7 =17-7=10
length =17 feet and width =10 feet
