2 years ago

I need help on all of them T-T (I'm bad at math)

Mathematics

1 answer:

Sav [38]2 years ago

3 0

Answer:

Once you upload a picture I'll help by editing my response :)

Step-by-step explanation:

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The length of a rectangle is 10cm and breadth is 5cm. find its perimeter.

Veronika [31]

Answer:

Perimeter of rectangle = 30 cm

Step-by-step explanation:

Perimeter of rectangle = (length + width) x 2

-- width or breadth --

Perimeter

= (10 + 5) * 2

= 15 * 2

= 30 cm

7 0

3 years ago

What is the sum of the geometric series 2+6+18+...+486?

marin [14]

Answer:

728

Step-by-step explanation:

2+6+18+...+486

a=2

r=6/2=3

$a_{n}=ar^{n-1}\\486=2(3)^{n-1}\\3^{n-1}=486/2=243=3^5\\n-1=5\\n=5+1=6\\S_{6}=2\frac{3^6-1}{3-1} \\=2\frac{729-1}{2}\\=728$

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3 years ago

Adiciona el término que hace falta para que sea un trinomio cuadrado perfecto x^2+3x+1

adell [148]

Answer:

COSAS

Step-by-step explanation:

en realidad hablo inglés XD

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3 years ago

Write 5,482 in expanded form

MakcuM [25]

Answer:

5000 + 400 + 80 + 2

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3 years ago

Read 2 more answers

Graph y=3x^2-5 and its inverse

zhenek [66]

The inverse is more complicated to graph.

But you can try I have provided you the equation.

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3 years ago