<span>3[-x+(2x+1)]=x-1
</span><span>3[x+1]=x-1
3x + 3 = x -1
3x - x = -1 -3
2x = -4
x = -4/2
x = -2</span>
Answer:
648 sq units
Step-by-step explanation:
Area of the base= 12×12= 144 sq. units
Perimeter of the base=4×12= 48
Total surface area= 1/2×48×21 + 144
=648 sq units
Answer:
(12, 5,) (30, 2,) (6, 10)
Step-by-step explanation:
All of these numbers are divisible by 60.
I put the parenthesis between the numbers, so you can see that if you multiply them, you'll get 60
I did it with "tries & mistakes" method:
n is not 1, because LCM of 1 and 6 is 6
n is not 2, because LCM of 2 and 6 is 6
n is not 3, because LCM of 3 and 6 is 6
n is not 4, because LCM of 4 and 6 is 12
n is not 5, because LCM of 5 and 6 is 30
n is not 6, because LCM of 6 and 6 is 6
n might be <u>7</u>, because LCM of 7 and 6 is what we're looking for - 42.
n might be also <u>14</u> or <u>21</u> - so these are all multiplies of 7 which are less or equal to half of 42.
I hope it helps :)
