Answer:
40
Step-by-step explanation:
X² + 10x +2 = 0 .Complete the square of (x² + 10x + ??)
We know that (10x) is equal to twice the square root of the 1st (x) by ??
10x = 2.x.(??) and ?? = 5 and its square is 25. Then I have to add 25 and subtract 25 so that not to change the equation:
(x² + 10x + 25) -25 +2 =0
(x+5)² -23
About 400 marbles. You simply set up a proportion and solve it as I did in the photo attached.
Easy!! 1 sandwich and 1 drink costs 3.47
Answer:
Yes
408 days
Step-by-step explanation:
The LCM is 408
= 408 days