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Tju [1.3M]
3 years ago
14

Anybody good in math ?

Mathematics
1 answer:
swat323 years ago
4 0

Answer:

y=-0.3(x-2)^2+2

Step-by-step explanation:

We know that the parabola faces downard, and hence must have a negative first term, so that eliminates the first and third options.

The vertex of the parabola has an x-value of 2, so it must be of the form a(x-3)^2+c.

Combining these, we have that the answer is \boxed{y=-0.3(x-2)^2+2}

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The circle with center O has a radius of 9 centimeters. If x=60 degrees, what is the length of arc AB?
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<h3>Answer:</h3>

A.) 3 pi cm

<h3>Step-by-step explanation:</h3>

The formula for arc length (s) as a function of radius (r) and central angle (θ) in radians is ...

... s = rθ

Here, you have r=9 cm and θ=(60°/180°)π = π/3 radians, so the arc length is ...

... s = (9 cm)·π/3 = 3π cm

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4 years ago
The average cost A to manufacture x items is modeled as A = 5+x/x, where A is expressed in dollars. which statement about functi
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The horizontal asymptote lies at A = 1. There is no possible way for A to equal one; this is the definition of an asymptote. 
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4 years ago
Four friends played mini golf. Their scores were –3, –2, –1, and 2. What is the mean absolute deviation of their scores?
yulyashka [42]
Answer is 1.5
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Add all number together divided it by 4, you'll get -1, (-3 + -2 + -1 + 2) ÷ 4 = -1) Then you subtract the mean by the numbers you used to get your mean so in this case it is 3, -2, -1, 2.
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-2-(-1)= -1
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2-(-1)= 3

Then you add the answers up but you have to turn the negative numbers to positive like -2 turns into just 2 and so does -1 to 1. (2+1+0+3= 1.5) Then you divide the 6 by how many numbers there are so in this case there are 4 numbers so you do 6 divided by 4 and you get 1.5. (Trust me I learned this)
8 0
3 years ago
The canopy of a parachute is a semicircle with a radius of 13 feet. A company that is making parachutes for a Fourth of July cel
Mars2501 [29]

ANSWER

(2). 88.5 ft²

EXPLANATION

The parachute is in the form of a semicircle, so the area of the entire parachute can be calculated using the formula,

Area=½ πr²

The radius is 13cm.

We substitute the radius to get

Area= \frac{1}{2} \pi \times  {13}^{2}

= 265.46457922834  \:  \: {ft}^{2}

The company required that, each parachute be made from equal parts of red, white, and blue fabric.

Hence, the fabric of each color needed is

= \frac{265.46457922834}{3}  = 88.4882

To the nearest tenth, we have,

= 88.5 {ft}^{2}

8 0
4 years ago
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Kruka [31]

A = 1200(1 + 0.06)^2= 1348.32


5 0
4 years ago
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