3 years ago

What is the sum of the first 7 terms of the series -8 + 16 – 32 + 64 - ... ?

1 answer:

stira [4]3 years ago

4 0

-344.

-8 + 16 -32 + 64 - 128 + 256 - 512 = -344

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sesenic [268]

it is 20

use the formula W x L =A

width (5) length (4)

5 x 4 is 20

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2 years ago

kolbaska11 [484]

x2 + 4x = 5. x2 + 4x = 5. x2 + 4x – 5 = 0

I think, but I may be wrong.

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3 years ago

sertanlavr [38]

Answer:

1,944ft

Step-by-step explanation:

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3 years ago

riadik2000 [5.3K]

Given equation is y=3x+3 and $\frac{1}{3}y=x+1$

Let's simplify the 2nd equation $\frac{1}{3}y=x+1$ before we can start graph so that calculation will be easy

$\frac{1}{3}y=x+1$

multiply both sides by 3 to cancel out fractions

$3*\frac{1}{3}y=3*x+3*1$

y=3x+3

which is exactly same as the first equation so graph of both will be exactly same and solution will be infinitely many solutions.

y=3x+3 has y-intercept 3 so first point will be (0,3). Slope is 3 so rise 3 unit up then 1 right and graph the new point.

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3 years ago

vampirchik [111]

They both use the intercections of arcs to find the line. I think.

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3 years ago