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3 years ago

8

A bouncy ball is dropped such that the height of its first bounce is 7 feet and each successive bounce is 67% of the previous bo

unce's height. What would be the height of the 8th bounce of the ball? Round to the nearest tenth (if necessary).

2 answers:

tekilochka [14]3 years ago

5 0

Answer: 0.2

Step-by-step explanation:

tatyana61 [14]3 years ago

3 0

Answer:

4.79

Hope this helps! :D

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Kyra has a rock collection. When she puts her rocks into 2 equal plies, there are no rocks left over. When she puts her rocks in

Nat2105 [25]

Step-by-step explanation:

According to this description we need a number that can be divided by 2,3 and 4 since the amount of rocks can be described by a natural number. However if a number is divided by 4 it is divided by 2 as well since 2*2=4.

$\frac{x}{4} = \alpha \\ \frac{x}{2} = 2 \alpha$

If α is a natural number then 2*α is a natural number as well as the product of two natural numbers.

Which means that we need a number devided by 3 and 4.

The smallest number that fulfills this demand is 3*4=12.

Also any product of 12 with any natural number can be devided by 3, 4 and 2.

If the exercise asks for the numbers that are divided only by 2,3 and 4 these are:

${3}^{ \alpha } \times 12 \: and \: {4}^{ \alpha } \times 12 \: \\ where \: \alpha \: belongs \: to \: the \: set \: of \: all \: \\ natural \: numbers$

8 0

3 years ago

What is the perimeter of a square with side length (2x-3)?

Elis [28]

Answer:

Perimeter = 8x - 12

Step-by-step explanation:

The perimeter of a square is:

p = 4(side length)

on this case:

p = 4(2x-3)

p = 4*2x + 4*-3

p = 8x - 12

7 0

3 years ago

Find (f o g)(x) and (g o f)(x). g(x) = x + 5 ; f(x) = 2x.

Lana71 [14]

Answer:

The answers are

f

∘

g

(

x

)

=

2

x

2

−

4

x

−

3

And

g

∘

f

(

x

)

=

(

2

x

−

3

)

(

2

x

−

5

)

Explanation:

f

(

x

)

=

2

x

−

3

g

(

x

)

=

x

2

−

2

x

=

f

(

g

(

x

)

)

=

f

(

x

2

−

2

x

)

=

2

(

x

2

−

2

x

)

−

3

=

2

x

2

−

4

x

−

3

g

∘

f

(

x

)

=

g

(

f

(

x

)

)

=

g

(

2

x

−

3

)

=

(

2

x

−

3

)

2

−

2

(

2

x

−

3

)

=

(

2

x

−

3

)

(

2

x

−

3

−

2

)

=

(

2

x

−

3

)

(

2

x

−

5

)

f

∘

g

(

x

)

≠

g

∘

f

(

x

)

Step-by-step explanation:

I search them on goggle..and that's the answer...

4 0

3 years ago

A square field has an area of 479 ft square . What is the approximate length of a side of the field? Give your answer to the nea

Kazeer [188]

Answer:

sorry i dont know

5 0

3 years ago

Sinθ=1/4, 0<θ<90; cosθ

statuscvo [17]

Try this option:
1. rule: if θ∈(0;90°), then cosθ>0 and sinθ>0;
2. using the rule and sin²θ+cos²θ=1, ⇒ cosθ=√(1-sin²θ)=√15/4.

answer:
$\frac{ \sqrt{15}}{4}.$

7 0

3 years ago