It depends. Everyone have there own preferences . I myself use the completing square method because I can do it fast. But many of my colleagues use quadratic formula. so there is no such thing as which one is easier.
Solve x2−6x−3=0
x2−6x=3
x2−6x+(−3)2=3+9
(x−3)^2=12
take square root on both sides
x−3=±12
x= 3 ±2√3
1. 6 units squared
2. 1 unit cubed
Step-by-step explanation:
In a cube, all the sides of all the squares have the same length.
Therefore, to find the surface area of the cube we will find the area of one square and multiply this with the number of squares in the cube (which is 6 sides)
(1*1) * 6 = 6
= 6 units squared
The formula for volume is Length * Width * Height
1 * 1 * 1 = 1
= 1 unit cubed
Learn More:
For more on surface area and volume of a cube check out;
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The train is travelling at 80 miles per hour, this can be represented by 80mi/h
As the symbol suggests, you find the value of speed by dividing the amount of miles by the amount of hours.
Let S be speed, D be distance and T be time
we get S=D/T so we have also T=D/S
as such, the time to go 288 miles is simply:
Answer:
49
Step-by-step explanation:
14*3.5
Because 49/3.5 = 49
Thats how I got it
Hope it helps