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aleksklad [387]
2 years ago
10

If the area of the larger circle is 25 times the area of the smaller circle then the radius of the larger circle is how many tim

es the radius of the smaller circle
Mathematics
1 answer:
Anna007 [38]2 years ago
3 0
25 times shorter than the bigger circle?
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A drawing has a scale of 1:40.
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Answer:

300,000 cm^{2} is bigger

Step-by-step explanation:

10 x 40 = 400

18 x 40 = 720

400 x 720 = 288,000 cm^{2} (area of the bedroom)

300,000 cm^{2} is bigger by 12,000 cm^{2} (so the kitchen is bigger)

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The equation of a parabola is given. y=34x2−6x+15
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The x coordinate of the vertex = -b/2a  = -(-6) / 2*34  = 0.08824

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A. -12
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c. 40meters
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Identify the steeper line y = 3x + 4 or y = 6x + 11
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Step-by-step explanation:

the steeper line is y = 6x + 11 because its gradient 6, is bigger than 3

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I need help bruv. For the function y=x^2 - 5x - 6 .
lara [203]

Answer:

a. Vertex = (2.5,-12.25)

b. y-intercept = (0,-6)

c. x-intercept = (6,0) ; (-1,0)

Step-by-step explanation:

a.

Your equation is written as:

y = ax^{2} + bx +c

The easiest way to find the vertex is writing the equation this way:

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

Being the vertex (h,k)

So first complete the square

y = x^{2} -5x -6 \\y = x^{2} - 2(2.5x) -6 \\y = x^{2} - 2(2.5x) +2.5^{2} - 2.5^{2} -6 \\y = (x^{2} -2(2.5x) + 2.5^{2}) -6.25 - 6 \\y = (x-2.5)^{2} -12.25

Vertex : (2.5,-12.25)

b.

To find the y-intercept you need to replace the equation when x = 0 and get y

y = (0)^{2} - 5(0) -6\\y = - 6

c.

To find the x-intercept you need to replace the equation when y = 0 and get x

0 = x^{2} - 5x -6 \\0 = (x-6)(x+1)\\x = 6\\x = -1

4 0
3 years ago
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