3 years ago

Please help on all the questions i will mark as BRAINLYEST thank you :)))

Mathematics

1 answer:

sergeinik [125]3 years ago

5 0

Yes it is right that is the right one

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A ribbon is cut into n parts. The length of each part increases such that they form a geometric progression. SPM Given the lengt

emmainna [20.7K]

Answer:

Step-by-step explanation:

$Let\ say\ r \ the \common\ ratio:\\a)a_4=r^2*a_2=9*a_2\Longrightarrow\ r=3\ (not\ -3\ since\ parts\ are\ positive)\\\\b)\\\displaystyle \sum_{i=1}^{n} a_i =a_1+a_2+a_3+...+a_n\\\\=a_1+a_1*r+a_1*r^2+a_1*r^3+...+a_1*r^{n-1}\\\\=a_1*(1+r+r^2+...+r^{n-1})\\\\=a_1*\dfrac{r^n-1}{r-1} \\\\147620=5*\frac{(3^n-1)}{3-1} \\\\3^n-1=\frac{2*147620}{5} \\\\3^n=59049 \\\\n*ln(3)=ln(59049)\\\\n=\dfrac{ln(59049)}{ln(3)} \\\\n=10\\\\a_n=5*3^{10-1}=5*19683=98415(cm)$

5 0

3 years ago

What is 2/3 of the product of 3/8and 16

MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

First, multiply 3/8 x 16:

3/8 x 16 = 6

Then find 2/3 of 6:

6/3=2

2x2=4

3 0

3 years ago

Read 2 more answers

A florist normally takes 20 hours to assemble 10 flower arrangements how long do it takes to do one flower arrangement

Mariana [72]

20/10= 2

All you need to do is divide the number of hours it takes by the number of flower arrangments. So, it takes the florist 2 hours to assemble one flower arrangement.

I hope this helps!
~kaikers

5 0

3 years ago

Type your answer in the box.

Valentin [98]

Answer:

The standard deviation of the set is: 1.5

Step-by-step explanation:

The actual standard deviation is 1.58... but to 1 decimal place it's 1.5

4 0

3 years ago

the art teacher is sending home a total of 3,150 projects before winter break if each of her 150 students had the same number of

Alenkinab [10]

Answer:

21 projects each

Step-by-step explanation:

3150 ÷150

4 0

3 years ago