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Margaret [11]
3 years ago
12

Does this graph show a function? Explain how you know.

Mathematics
1 answer:
Serggg [28]3 years ago
5 0

Answer:

The answer is C.

Step-by-step explanation:

No because the graph fails the vertical line test.

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What is the area of the sector with a central angle of 49° and a radius of 11 cm? Use 3.14 for pi and round your final answer to
olga_2 [115]

Answer:

\boxed{\text{51.71 cm}^{2}}

Step-by-step explanation:

If the angle θ is in radians, the formula for the area (A) of a sector of a circle is

A = ½r²θ

If θ is in degrees

A = \dfrac{1}{2}r^{2}\theta \times \dfrac{\pi \text{ rad}}{180^{\circ}}= \pi r^{2}\times\dfrac{\theta }{360}

Data:

θ = 49°

r = 11 cm

Calculation:

\begin{array}{rcl}A& = &3.14\times 11^{2}\times\dfrac{49}{360}\\\\ & = &3.14 \times 121 \times 0.1361\\ & = & \mathbf{51.71}\\\end{array}\\\text{The area of the sector is }\boxed{\textbf{51.71 cm}^{2}}

4 0
3 years ago
Please help me
lisabon 2012 [21]

Answer:

5

Step-by-step explanation:

3+2x = 4x-7

3+7=4x-2x

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3 0
2 years ago
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I need help I don't know what to do! ( / is a fraction bar!!)
kari74 [83]
#1 4/5x + 2/3x = 1 -4/15
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7 0
3 years ago
What is the mathematical sentence of "A number increasd by 7 is 15?
svet-max [94.6K]

Answer:

B

Step-by-step explanation:

A number increased by 7 means, 7 was added to the number and the result is 15

6 0
2 years ago
Square root of 1682/20000 and not a decimal plz
-Dominant- [34]
29/10000 is the square root of 1682/20000
4 0
3 years ago
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