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Natasha_Volkova [10]

3 years ago

14

PLEASE HELP!!!! Will be rewarded brainliest!!

1 answer:

kozerog [31]3 years ago

3 0

Answer:

9.5

Step-by-step explanation:

If c to a is 19 then you divide the distance by 2 and you get 9.5 for the two distances.

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MariettaO [177]

Answer:

1.The ratio of dogs to cats is 3 to 4

2. For every 3 dogs there are 4 cats.

Step-by-step explanation:

5 0

3 years ago

You spent $10.50 at the fair. If it costs $4.50 for admission and you rode

7nadin3 [17]

150 each because he will have $6 left

7 0

3 years ago

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A buoy floating in the sea is bobbing in simple harmonic motion with period 2 seconds and amplitude 8 in. Its displacement d fro

Mrac [35]

Answer:

The equation of the displacement $d$ as a function of time $t$ is :

$d(t)=8sin(\pi t+\pi )$

Step-by-step explanation:

Generally , A simple harmonic wave is a sinusoidal function that is it can be expressed in simple $sin$ or $cos$ terms.

Thus,

$d(t) = Asin(wt+c)$

is the general form of displacement of a SHM.

where,

<em> $d(t)$ is the displacement with respect to the mean position at any time $t$ </em>
<em> $A$ is amplitude </em>
<em> $w$ is the natural frequency of oscillation ( $rads^{-1}$ )</em>
<em> $c$ is the phase angle which indicates the initial position of the object in SHM ( $rad$ )</em>

given,

Time period ( $T$ ) = $2s$
$A=8$
The natural frequency ( $w$ ) and time period ( $T$ ) is :

$w=\frac{2\pi} {T}$

∴

$w$ = $\frac{2\pi }{2} = \pi$ $rads^{-1}$

∴

the equation :

<em>⇒ $d(t)=8sin(\pi t+c)$ </em> ------1

since $d=0$ when $t=o$ ,

<em>⇒ $0=8sinc\\c=n\pi$ ------2</em>

where n is an integer ;

<u>⇒since the bouy immediately moves in the negative direction , $x$ must be negative or c must be an odd multiple of $\pi$ .</u>

<em>⇒ $d(t) = 8sin(\pi t+(2k+1)\pi )$ ------3</em>

where k is also an integer ;

the least value of $k=0$ ;

thus ,

the equation is :

$d(t)=8sin(\pi t+\pi )$

<em></em>

7 0

3 years ago

Which represents an exterior angle of triangle ABF?<br><br>∠BAD<br>∠AFE<br>∠CAD<br>∠CAB

il63 [147K]

Answer: it is <CAB

Step-by-step explanation: i just took a test on ed and passed with a 100%

4 0

3 years ago

Read 2 more answers

4^0 + 5^0 + 6^0 = (4+5+6)^0<br> a)True<br> b)False

Yuri [45]

Step-by-step explanation:

false

4^0 + 5^0 + 6^0= 1+1+1=3

(4+5+6)^0= 3⁰=1

1≠3

7 0

3 years ago

Read 2 more answers