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3 years ago

8

Im really bad at these questions I need an answer and an explanation

2 answers:

Sophie [7]3 years ago

7 0

Answer:

63/100 or 63%

Step-by-step explanation:

iris [78.8K]3 years ago

7 0

Answer:

The percent that represents the model is 63%

Step-by-step explanation:

The model is 100 squares, correct? Well, there are 63 shaded. We can easily put that into a percent because percents are always out of 100. In other words, if there was X/100, the X would be the percent. In this case, 63 is in the X spot because that is how many there are shaded, which makes the percent 63%.

Hope this helps <3

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it takes Patty 1/3 of an hour to wash your car and half the time to dry it off how long will it take to get to wash and dry six

AnnyKZ [126]

It would take 20 min to wash so 20 times 6 120 then u add 60 bc there is 6 cars and it takes 10 min to dry each of them off

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3 years ago

R= 2s-6t 5 divided by 2, solve for s

ki77a [65]

R = (2s - 6t + 5)/2
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s = (2R + 6t - 5)/2

8 0

3 years ago

What is the area of a square if the base is 4 m in the height is 4 m

iVinArrow [24]

Answer: the area is 16m

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6 0

3 years ago

What quadratic function does the graph represent?

nekit [7.7K]

Answer:

$f(x)=-\frac{1}{3}(x-2)^2+4$ ,

Step-by-step explanation:

The function of the graph can be written in the vertex form as

$f(x)=a(x-h)^2+k$ , where V(h,k)=V(2,4) is the vertex of the quadratic function.

We substitute the value to obtain;

$f(x)=a(x-2)^2+4$ ,

The point (5,1) lies on the graph so we use it to determine the value of a.

$1=a(5-2)^2+4$ ,

$1-4=a(3)^2$ ,

$-3=9a$ ,

$a=-\frac{1}{3}$

The required equation is

$f(x)=-\frac{1}{3}(x-2)^2+4$ ,

5 0

3 years ago

A guitar string is plucked at a distance of 0.6 centimeters above its resting position and then released, causing vibration. The

liubo4ka [24]

Answer:

The equation that represents the motion of the string is given by:

$y =Ae^{-kt}\cos(2\pi ft)$ .....[1] where t represents the time in second.

Given that: A = 0.6 cm (distance above its resting position) , k = 1.8(damping constant) and frequency(f) = 105 cycles per second.

Substitute the given values in [1] we get;

$y =0.6e^{-1.8t}\cos(2\pi 105t)$

or

$y =0.6e^{-1.8t}\cos(210\pi t)$

(a)

The trigonometric function that models the motion of the string is given by:

$y =0.6e^{-1.8t}\cos(210\pi t)$

(b)

Determine the amount of time t that it takes the string to be damped so that $-0.24\leq y \leq0.24$

Using graphing calculator for the equation

$y =0.6e^{-1.8x}\cos(210\pi x)$

let x = t (time in sec)

Graph as shown below in the attachment:

we get:

the amount of time t that it takes the string to be damped so that $-0.24\leq y \leq0.24$ is, 0.5 sec

4 0

3 years ago