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3 years ago

A scuba diver reaches an elevation of -78 feet, which is a depth of 78 feet.

Mathematics

1 answer:

gavmur [86]3 years ago

6 0

Answer:

true

Step-by-step explanation:

depth is how far down you are from the surface

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what will come in the following series 20 25 23 28 26 31 29 34 _? answer is 31. please explain how?? urgent pls

Assoli18 [71]

The series of numbers is adding 5 and then subtracting 2

20+5=25

25-2=23

23+5=28

28-2=26

and so on. Do you understand?

7 0

3 years ago

Find the sum of a finite geometric series. The Smiths spent $2,000 on clothes in a particular year. If they increase the amount

boyakko [2]

$\bf \stackrel{\textit{first year}}{2000}~~,~~\stackrel{\textit{second year}}{2000+\stackrel{\textit{10\% of 2000}}{\frac{2000}{10}}}\implies 2200$

now, if we take 2000 to be the 100%, what is 2200? well, 2200 is just 100% + 10%, namely 110%, and if we change that percent format to a decimal, we simply divide it by 100, thus $\bf 110\%\implies \cfrac{110}{100}\implies 1.1$ .

so, 1.1 is the decimal number we multiply a term to get the next term, namely 1.1 is the common ratio.

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}\\\\S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad \begin{cases}n=n^{th}\ term\\a_1=\textit{first term's value}\\r=\textit{common ratio}\\----------\\a_1=2000\\r=1.1\\n=4\end{cases}\\\\\\S_4=2000\left[ \cfrac{1-(1.1)^4}{1-1.1} \right]\implies S_4=2000\left(\cfrac{-0.4641}{-0.1} \right)\\\\\\S_4=2000(4.641)\implies S_4=9282$

7 0

3 years ago

I need to now why won’t I rank up I have 1500 points and 10/10 brainliest and I need to now why won’t I rank up to expert

irinina [24]

Answer:

it was doing that to me too, you just have to keep answering and eventually it will come i was waiting a week on virtuoso with all the points and brainliest i needed

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Correct solutions if identified to be incorrect

german

Answer:

it is correct

Step-by-step explanation:

b/c 5a square - 25b square

= 5(a square - 5 b square )

7 0

2 years ago

Help meeee it's math ::Simplify an expression for the perimeter of the rectangle shown

bagirrra123 [75]

8.6x + 3 + 8.6+3 =. 17.2x + 6

5.2+5.2= 10.4

17.2x + 6 = 10.4

5 0

3 years ago