2 years ago

Find the sum of the arithmetic series in which a1 = –68, d = –3, and n = 20.

1 answer:

6 0

Step-by-step explanation:

Sum of 20 terms in thr arithmetic sequence adds up to -1930

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irina1246 [14]

The vale of x is 55 !!

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2 years ago

sweet [91]

Answer:

z = 5/2y -1

Step-by-step explanation:

We observe that z has ...

To solve for z, we undo these operations in reverse order.

$\dfrac{2}{5}(z+1)=y\qquad\text{given}\\\\z+1=\dfrac{5}{2}y\qquad\text{multiply by 5/2}\\\\\boxed{z=\dfrac{5}{2}y-1}\qquad\text{subtract 1}$

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Ket [755]

$1\frac{1}{2} - \frac{3}{4}$
$\frac{3}{2} - \frac{3}{4}$
$\frac{6}{4} - \frac{3}{4}$
= $\frac{3}{4}$

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2 years ago

Sidana [21]

Answer:

Step-by-step explanation:

Have a good day i hope this helps :)

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2 years ago

Andrei [34K]

Correct! Excellent Job

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2 years ago