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Lady bird [3.3K]
2 years ago
9

Help me with this pie chart [urgent i guess]​

Mathematics
1 answer:
Leokris [45]2 years ago
4 0

(b) 40 * \frac{72}{360} = 40 * \frac{1}{5} = 8

(c) 360 - (72 + 144 + 81) = 360 - 297 = 63

(d) \frac{144}{360} = \frac{2}{5}

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The vertex of the parabola below is at the point (3,2) and the point (4,6) is on the parabola. What is the equation of the parab
nata0808 [166]

Answer:

\large\boxed{y=4(x-3)^2+2\ \bold{vertex\ form}}\\\boxed{y=4x^2-24x+38\ \bold{standard\ form}}

Step-by-step explanation:

The vertex form of a parabola:

y=a(x-h)^2+k

(h, k) - vertex

We have the vertex at (3, 2) → h = 3 and k = 2.

Substitute:

y=a(x-3)^2+2

The point (4, 6) is on athe parabola. Put the coordinates of this point to the equation:

6=a(4-3)^2+2       <em>subtract 2 from both sides</em>

6-2=a(1)^2+2-2

4=a\to a=4

Finally:

y=4(x-3)^2+2          <em>vertex form</em>

<em>use (a - b)² = a² - 2ab + b²</em>

y=4(x^2-6x+9)+2          <em>use the distributive property</em>

y=4x^2-24x+36+2

y=4x^2-24x+38             <em>standard form</em>

6 0
3 years ago
PLEASE HELP ME! I WILL GIVE BRAINLIEST
RSB [31]

Answer:

  • 30 cm²

Step-by-step explanation:

The shaded area is the difference of the total area and the white triangle.

The white triangle has base of 9 cm and height of 4 cm.

<u>Its area is:</u>

  • A = 1/2*9*4 = 18 cm²

<u>Area of rectangle:</u>

  • A = 12*4 = 48 cm²

<u>The shaded area:</u>

  • 48 - 18 = 30 cm²
3 0
2 years ago
What is 4/5 of 20?<br><br> I thought it was 16 but apparently that was wrong??? I even looked it up
Simora [160]

Step-by-step explanation:

divided 20 by 5 times that by 4

20 divided by 5 is 4

4x4 is 16 its 16 you got it right

3 0
2 years ago
Read 2 more answers
Given the graph of y = f(x), explain and contrast the effect of the constant c on the
shepuryov [24]
We use the graph of f(x)=sin(x) as an example. The graph is shown in the first picture below

Let's take 2 as the value of the constant 'c' 

The transformation of f(x)=sin(2x) gives the effect of halving the x-coordinates, as shown in the second picture. 

The transformation of f(x)=2sin(x), as shown in the third picture, gives the effect of doubling the y-coordinate

In conclusion, y=f(cx)gives the effect of halving the x-coordinates while y=cf(x) gives the effect of doubling the y-coordinates

8 0
3 years ago
419.10 419.099 greater than equal too or less than
Veronika [31]
419.10>419.099 419.10 is greater than 419.009
4 0
3 years ago
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