Answer:
The number -2 shows the total change in amount of cookies. The negative sign signifies the decrease in the number.
Step-by-step explanation:
Total cookies Quon has = 15
Cookies eaten in the afternoon = 1
Cookies eaten in the evening = 1
So, total number of cookies consumed = 
Cookies left with Quon = 
So, the number -2 shows the total change in amount of cookies. The negative sign signifies the decrease in the number.
First you have to do the problem in the perenteces, so 21 + 42 = 63. Now we have to do 63 x 3 which is 189. We have to do the second one now so 18 + 12 is 30, and now we times that by 4, so know it is 120. Lastly we add 189 + 120 which gives us an answer of 309.
It is 309.
T = total bill = 20 + 8.90 = $28.90
O = original bill
O * 1.18 = T
O * 1.18 = 28.90
O = 28.90 / 1.18
O = $24.49
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
