2 years ago

HELPPPPP!!!!!!!!

Mathematics

1 answer:

Softa [21]2 years ago

6 0

It would be 10 the slope is always with the x

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What is the sum of the first 4 terms of a geometric sequence that has a first term of 2 and a ratio (multiplier) of 8?

taurus [48]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence} \\\\ S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio}\\ ----------\\ a_1=2\\ r=8\\ n=4 \end{cases} \\\\\\ S_4=2\left( \cfrac{1-8^4}{1-8} \right)\implies S_4=2\left( \cfrac{-4095}{-7} \right) \\\\\\ S_4=2(585)\implies S_4=1170$

6 0

3 years ago

Pls help asap!!!! help help math math

siniylev [52]

Answer:

Step-by-step explanation:

the pattern is plus 6

4 0

3 years ago

Read 2 more answers

Help! This is due today and I'm stuck on the last problem.

FrozenT [24]

Answer:

Step-by-step explanation:

Square

519450.2

Holes

Semi-circle: 1/2*pi*r^2

diameter = 700/2 = 350 =radius

1/2*pi*350 = 175*pi

Triangle

1/2 b*h

1/2 200*400

100*400

40000

Take out the semi circle and triangle

560000-40000-175*pi

520000-175*pi = 519450.2

6 0

3 years ago

Elaine has a piece of wire that is 2.16 years long.mallory has a piece of wire that is 2.061 m long. Who’s piece of wire is long

Monica [59]

Answer:

First of all you spelled years instead of yards. But I'd say that Mallory has the longer piece of wire.

Step-by-step explanation:

Because of 2.16 yds over 1 times 1 meter over 3 yds. You divide them instead of multiplying, you get 1.97 meters.

3 0

3 years ago

List three terms that are like the given terms below.<br> - 19m<br> 28<br> 42bc<br> 2r

andrew-mc [135]

Answer:

chicken

Step-by-step explanation:

7 0

3 years ago