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Tems11 [23]
3 years ago
15

Please help! Will mark brainliest! :))))

Mathematics
1 answer:
kiruha [24]3 years ago
7 0

Answer:

1. D

2. A

3. C

4. D

5. B

6. B

7. C

8. D

have a good day.

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Anuta_ua [19.1K]
The union - set of all elements in O and T ( or both ):
O  U T = { 49,50,52,54,55,56,59,60,61,62,65,68,70,71,72,74,75 } 
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4 years ago
The axis of symmetry for a quadratic equation can be found using the formula x equals StartFraction negative b Over 2 a EndFract
alexandr402 [8]

Answer:

a=-\frac{b}{2x}

Step-by-step explanation:

The equation of a quadratic function is given as:

ax² + bx + c = 0

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The axis of symmetry of the quadratic equation is given as:

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To get the equation for a, we have to make a the subject of formula:

x=-\frac{b}{2a}\\\\multiply\ both\ sides\ by \ 2a:\\\\x*2a=-\frac{b}{2a}*2a\\\\2ax=-b\\\\Divide\ through\ by\ 2a\\\\2ax/2a=-b/2a\\\\a=-\frac{b}{2x}

5 0
4 years ago
Read 2 more answers
A circle with a radius of 5 has a sector with a central angle of 9/10pi radians what is the area of the sector
Snowcat [4.5K]

Answer:

11.25pi units² or 35.3 units² (3 sf)

Step-by-step explanation:

½×r²×theta

½ × 5² × 0.9pi

11.25pi units²

Or, 35.3 units² (3 sf)

6 0
3 years ago
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Answer:

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Step-by-step explanation: Since f(x) = 5x + 11, we find f(-5)

by substituting a -5 in for the x in the function to get f(-5) = 5(-5) + 11.

Now just simplify the right side to get -25 + 11 or -14.

So f(-5) = -14.

4 0
3 years ago
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