Step-by-step explanation:
Sn=n/2(2a+(n-1)d)
910=n/2{2a+(n-1)d}
1820=n{2a+(n-1)d}
1820=20{2a+(20-1)d}
1820=20{2a+19d}
91=2a+19d
An=a+(n-1)d
95=a+(20-1)d
95=a+19d
91=2a+19d
---------------
4=-a
a=-4
91=2a+19d
91=2(-4)+19d
91=-8+19d
91+8=19d
99=19d
d=99/19
A=-4
False because -5/11 should be add on both sides
Well what do u need help with can u explain?
Hey there!
4/7 + 5/6
≈ 24/42 + 35/42
≈ 24 + 36/ 42 - 0
≈ 59/42
≈ 1 17/42
Therefore, your answer is:
59/42 or 1 17/42
EITHER OF THOSE SHOULD WORK BECAUSE THEY ARE EQUIVALENT.
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
