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3 years ago

HELP LET ME KNOW IF U HAVE QUESTIONS

Mathematics

2 answers:

romanna [79]3 years ago

8 0

Answer:do you have another picture so I can see it better to help you

Step-by-step explanation:

thanks

goldfiish [28.3K]3 years ago

6 0

Answer:

its very very very tiny bro i can't see it

Step-by-step explanation:

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Mohamed and Li Jing were asked to find an explicit formula for the sequence -5, -25, -125, -625,....

Nuetrik [128]

Answer:

Li Jing's formula i.e. $\boxed{g_n=-5\cdot \:5^{n-1}}$ is right.

Step-by-step explanation:

Considering the sequence

$-5,\:-25,\:-125,\:-625,...$

A geometric sequence has a constant ratio r and is defined by

$g_n=g_0\cdot r^{n-1}$

$\mathrm{Compute\:the\:ratios\:of\:all\:the\:adjacent\:terms}:\quad \:r=\frac{g_{n+1}}{g_n}$

$\frac{-25}{-5}=5,\:\quad \frac{-125}{-25}=5,\:\quad \frac{-625}{-125}=5$

$\mathrm{The\:ratio\:of\:all\:the\:adjacent\:terms\:is\:the\:same\:and\:equal\:to}$

$r=5$

So, the sequence is geometric.

$\mathrm{The\:first\:element\:of\:the\:sequence\:is}$

$g_1=-5$

$r=5$

$g_n=g_1\cdot r^{n-1}$

$\mathrm{Therefore,\:the\:}n\mathrm{th\:term\:is\:computed\:by}\:$

$g_n=-5\cdot \:5^{n-1}$

Therefore, Li Jing's formula i.e. $\boxed{g_n=-5\cdot \:5^{n-1}}$ is right.

8 0

4 years ago

Bob bought a pair of shoes that were listed at $130. If he paid $8.45 in sales tax, what was the sales tax percentage?

Musya8 [376]

Answer:

15.38461538461538‬

Step-by-step explanation:

6 0

3 years ago

Please help with both and leave a small explanation! I wanna double check my answers! Also I’ll mark brainliest :)

77julia77 [94]

Answer:

1. 10m

2. 18 ft

Step-by-step explanation:

These are just ratios. They are both essentially doubling

7 0

3 years ago

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What is the answer to 1/8(8x+15)=24

Korvikt [17]

Answer:

x = 177/8

Step-by-step explanation:

First, we must get rid of the fraction by multiplying 8 by both sides.

8 · 1/8(8x + 15) = 24 · 8

1(8x + 15) = 192

8x + 15 = 192

Then we simplify. First subtract 15 from both sides.

8x + 15 - 15 = 192 - 15

8x = 177

Then divide 8 from both sides.

8x/8 = 177/8

x = 177/8

4 0

3 years ago

During a musical, an orchestra is playing. As the music plays, the volume changes at the beginning of the piece can be modeled b

Ivanshal [37]

Answer:

what

Step-by-step explanation:

...

5 0

3 years ago

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