You can estimate that 5x4257 is 20,000
to check 5x4257=21,375 which is close to 20,000
Put 15 where n is, then do the arithmetic.
b(n) = 6n . . . . . . . . . . . the formula for the number of bulbs for n chandeliers
b(15) = 6·15 = 90
The appropriate choice is ...
... 90 light bulbs
Answer:
10
Step-by-step explanation:
11, 13, 4, 9
In order to find the median we must first arrange the numbers in order (Least to greatest)
4, 9, 11, 13
If there is 2 numbers in the middle: the median is their average
If there is only one number in the middle, that number is the median.
Since there are two numbers (9 and 11) we have to take their average.
(9+11) / 2 = 20 / 2 = 10
The median is 10!
Answer:
x = 1+√3 i/2 and x = 1-√3 i/2
Step-by-step explanation:
Given the expression x^2 - x+ 1, we are to factorize the expression as shown;
x^2 - x+ 1,
using the general formula
x = -(-1)±√1²-4(1)/2(1)
x = 1±√1-4/2
x= 1±√-3/2
x = 1±√3 i/2
Hence the required value of x are x = 1+√3 i/2 and x = 1-√3 i/2
J.WYIBVNJVJNDVBBNUVHUGHTNBJTHNIL
