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3 years ago

Who is the richest president in the world

Mathematics

1 answer:

olga55 [171]3 years ago

3 0

The richest president in the world is Sebastian Pinera, President of Chile with $2.4 billion.

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1. Reculando<br> a) Cediendo<br> b) Retrocediendo<br> c) Debilitando<br> d) Avanzando

Degger [83]

Answer:

b) Retrocediendo

Step-by-step explanation:

Llevan las dos palabras más or menos el mismo significado.

5 0

3 years ago

The sum of the circumference of two circles is 38π cm and the sum of their areas is 193π cm². Calculate the radii of the circles

sdas [7]

Answer:

The radii of the circles are 12 cm and 7cm.

Step-by-step explanation:

Let the radii of the circles be $r_{1}\ and\ r_{2}$

Given:

Sum of circumference of two circles= 38π cm

Formula for circumference of a circle with radius r = 2πr

$2\pi r_{1}+2\pi r_{2}=38\pi \\r_{1}+r_{2}=19$ ------------1

Sum of areas of two circles= 193π cm²

Area of circle with radius r = πr²

$\pi r_{1}^{2}+\pi r_{2}^{2}=193\pi \\r_{1}^{2}+r_{2}^{2}=193$ -------2

Substituting r2 = 19 - r1 in equation 2 we get:

$r_{1}^{2}+(19-r_{1})^{2}=193\\2r_{1}^{2}-38r_{1}+168=0\\r_{1}^{2}-19r_{1}+84=0\\(r_{1}-12)(r_{1}-7)=0\\r_{1}=12\ or\ 7$

Then r2 = 19 - r1

$r_{2}=12\ or\ 7$

7 0

3 years ago

Can someone please help

tankabanditka [31]

Correct answer is D :)

3 0

3 years ago

Read 2 more answers

Where is the south of Asia

yawa3891 [41]

Answer:

The southern asia are includes Afghanistan, India, Pakistan, Bangladesh, Sri Lanka, Nepal, Bhutan and Maldives as the constituent countries.

hope this helps as the south of asia is hard to describe, that is why I included a map.

Step-by-step explanation:

4 0

3 years ago

A fair spinner has 10 equal sections there is a probability scale

umka21 [38]

Answer:

1/10

Step-by-step explanation:

Because there is ten different numbers so therefore it would be 10/1

5 0

3 years ago

Read 2 more answers

Who is the richest president in the world​

Who is the richest president in the world