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3 years ago

Simplify this ratio

Mathematics

2 answers:

34kurt3 years ago

7 0

The answer is 1:4 because, 2:8 is proportional to it by dividing each number by 2, hope this helped!!

frez [133]3 years ago

5 0

Answer:

1:4

Step-by-step explanation:

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A certain ball is dropped from a height of x feet. It always bounces up to 2/3 x feet. Suppose the ball is dropped from 10 feet

galina1969 [7]

Given that if a ball is dropped from x feet, it bounces up to 2/3 x feet.

And the ball is dropped from 10 feet, that is x=10 feet,

So,before the first bounce it travels 10 feet distance.

Between first and second bounce it travels $\frac{2}{3}* 10 + \frac{2}{3} * 10 = 20*(\frac{2}{3})$

Between second and third bounce, it travels $20*(\frac{2}{3})^{2}$

Between third and fourth bounce, it travels $20*(\frac{2}{3}) ^{3}$

Like that between 29th and 30th bounce, it travels $20*(\frac{2}{3} )^{29}$

Hence total distance traveled is

$10+20*(\frac{2}{3} )+20*(\frac{2}{3})^{2} + 20*(\frac{2}{3}) ^{3}+......+20*(\frac{2}{3})^{29}$

= $10+20[(\frac{2}{3}) +(\frac{2}{3}) ^{2} +(\frac{2}{3}) ^{3} +.....+(\frac{2}{3} )^{29} ]$

= $10+20[\frac{\frac{2}{3}*(1-(\frac{2}{3})^{29}) }{1-\frac{2}{3} }]$

= 10+20*2*(1- $(\frac{2}{3}) ^{29}$ )

= 49.9997 feet ≈ 50 feet approximately.

7 0

3 years ago

Read 2 more answers

Pls helppppp!!

Wittaler [7]

1) -5-4i
2) 5+4i
3) -4+5i
hope this helps pls mark me branliest!!<3

8 0

3 years ago

Really struggling with this, can someone please help me out and give me a brief explanation? Id seriously appreciate it.

Bogdan [553]

Answer:

314 m²

Step-by-step explanation:

the surface area of a sphere (As) is

As = 4×pi×r²

our radius r (half of the diameter) here is 5m.

As = 4×3.14×5² = 4×3.14×25 = 100×3.14 = 314 m²

8 0

3 years ago

Pls solve this for me

Georgia [21]

Answer: 253.5

Step-by-step explanation:

If your equation is 6s^2, all your doing is:

6x6.5^2,

or the long-form

(6.5*6.5) + (6.5*6.5) + (6.5*6.5) + (6.5*6.5) + (6.5*6.5) + (6.5*6.5) = 253.5

6 0

3 years ago

What is the value of log, 81? N け間 w оооо ол

kramer

Answer:

1.908

Step-by-step explanation:

Assuming you are going at a base of 10,

㏒81 = 1.908, just use a calculator

7 0

3 years ago