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2 years ago

Help me plzzzzzz.,,,,,,,,,,

Mathematics

2 answers:

motikmotik2 years ago

7 0

Answer:

x = 2/3 = 0.667

slava [35]2 years ago

4 0

The answer is red I think

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A ball is thrown vertically upwards from the ground. It rises to a height of 10m and then falls and bounces. After each bounce,

Citrus2011 [14]

${\huge{\fcolorbox{yellow}{red}{\orange{\boxed{\boxed{\boxed{\boxed{\underbrace{\overbrace{\mathfrak{\pink{\fcolorbox{green}{blue}{Answer}}}}}}}}}}}}}$

(i)

$\sf{a_n = 20 \times {( \frac{2}{3} )}^{n - 1} }$

(ii)

$\sf S_n = 60 \{1 - { \frac{2}{3}}^{n} \}$

Step-by-step explanation:

$\underline\red{\textsf{Given :-}}$

height of ball (a) = 10m

fraction of height decreases by each bounce (r) = 2/3

$\underline\pink{\textsf{Solution :-}}$

(i) We will use here geometric progression formula to find height an times

${\blue{\sf{a_n = a {r}^{n - 1} }}} \\ \sf{a_n = 20 \times { \frac{2}{3} }^{n - 1} }$

(ii) here we will use the sum formula of geometric progression for finding the total nth impact

$\orange {\sf{S_n = a \times \frac{(1 - {r}^{n} )}{1 - r} }} \\ \sf S_n = 20 \times \frac{1 - ( { \frac{2}{3} })^{n} }{1 - \frac{2}{3} } \\ \sf S_n = 20 \times \frac{1 - {( \frac{2}{3}) }^{n} }{ \frac{1}{3} } \\ \sf S_n = 3 \times 20 \times \{1 - ( { \frac{2}{3}) }^{n} \} \\ \purple{\sf S_n = 60 \{1 - { \frac{2}{3} }^{n} \}}$

4 0

1 year ago

I need help on math also thank you im not very smart...

saul85 [17]

Answer:

Step-by-step explanation:

3 0

2 years ago

-3/2(x-2) simplify please

mario62 [17]

Answer:-3x+6/2

Step-by-step explanation:

To simplify -3/2(x-2)

We get

-3x+6/2

4 0

2 years ago

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ANSWER THIS ASAP DONT SEND A FILE AT ALL !! I NEED THE ANSWER QUICK HELPP ONLY ANSKER IF YOY REALLY KNOW!!

andre [41]

Answer:

...

Step-by-step explanation:

(x+8)(y+3)

8 0

3 years ago

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An equilateral triangle and a square both have perimeters of 48 inches. what is the ratio of the length of the side of the trian

labwork [276]

A square with a perimeter of 48 inches would have 12 in sides, while a triangle of the same perimeter would have 16 in sides. The ratio would be 16/12 which simplified to 4/3.

8 0

2 years ago