2 years ago

A1, a1r 1, a1r 2, a1r 3, a1r 4, .... a1r n-1 is the general formula for the Sum of a what?

Mathematics

1 answer:

NeTakaya2 years ago

8 0

Of a geometric sequence.

You might be interested in

Leo prepared 16 kilograms of dough after

tatuchka [14]

Step-by-step explanation:

16 kg= 8 hours (divide by 8 to find 1 hour how many kg)

2kg=1 hour ( multiply by 9 as we need to find 18 kg

so 9 hours=18kg

So it'll take 9 hours for 18 kg of dough to be made

Hope this helps!!!

Have a nice day:)

3 0

3 years ago

Solve for x.

Nonamiya [84]

$-\dfrac{2}{3}(3x-4)+3x=\dfrac{5}{6}\ \ \ \ |\text{use distributive property}\\\\-\dfrac{2}{\not3_1}\cdot\not3^1x+\dfrac{8}{3}+3x=\dfrac{5}{6}\\\\-2x+3x+\dfrac{8}{3}=\dfrac{5}{6}\ \ \ \ |-\dfrac{8}{3}\\\\x=\dfrac{5}{6}-\dfrac{8}{3}\\\\x=\dfrac{5}{6}-\dfrac{8\cdot2}{3\cdot2}\\\\x=\dfrac{5}{6}-\dfrac{16}{6}\\\\\boxed{x=-\dfrac{11}{6}}$

Other method:

$-\dfrac{2}{3}(3x-4)+3x=\dfrac{5}{6}\ \ \ \ |\cdot6\\\\2(-2)(3x-4)+18x=5\\\\-4(3x-4)+18x=5\ \ \ \ |\text{use distributive property}\\\\-12x+16+18x=5\ \ \ \ |-16\\\\6x=-11\ \ \ \ |:6\\\\\boxed{x=-\dfrac{11}{6}}$