Answer:
1/3(n+1)³
Step-by-step explanation:
1x2+2x3+3x4+4x5+...= 1²+1+2²+2+3²+3+...+n²+n+1=
=(1²+2²+3²+...+n²)+(1+2+3+...+n+1)=
=1/6n(n+1)(2n+1)+1/2(n+1)(1+n+1)=
=1/6(n+1)(n(2n+1)+3(n+2))=
=1/6(n+1)(2n²+4n+2)=
=1/6(n+1)*2(n+1)²=
=1/3(n+1)³
Answer:
3 liters
Step-by-step explanation:
if 1.5 liters is 50% of the original amount, then to find the original amount you must multiply by two, or:
1.5 liters ×2=3 liters
C is the answer hope that helps have a good day
Area of a right triangle is equal to (the length times the height) divided by 2
So the area of each tile is (3 x 3) / 2 = 4.5 square centimeters
200 tiles equal 200 x 4.5 = 900 sq cm
<em><u>below</u></em>
Step-by-step explanation:
- <em><u>The general formula for the total surface area of a cylinder is T. S. A. =2πrh+2πr2 </u></em><em><u>•</u></em>
