3 years ago

Please help ASAP 20 points, + brainliest to right/best answer

Mathematics

1 answer:

blagie [28]3 years ago

6 0

Answer:

A: 1,0

Step-by-step explanation:

The vertex is the start of the parabola. In this parabola it is the highest point. The vertex is 1,0.

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Which expression is equivalent to-2-7?

Alla [95]

Answer:

Well

1) -2+(-7)

2) -7-2

Step-by-step explanation:

Both equations work and their equivalent

4 0

3 years ago

If the radius is 14cmand The perimeter of the sector is 57.32cm.<br>what is the size of the angle?

Degger [83]

Answer:

120°

Step-by-step explanation:

A sector of a circle is the portion or region of a circle enclosed by two radii and an arc. The perimeter of a the sector of a circle is given by the formula:

Perimeter of sector = $\frac{\theta}{360} *2\pi r$ + 2r

Where θ is the angle which forms the sector and r is the radius of the circle.

Given that Perimeter of sector = 57.32 cm, radius (r) = 14 cm, we can find the angle θ using:

Perimeter of sector = $\frac{\theta}{360} *2\pi r$ + 2r

$57.32=\frac{\theta}{360} *2\pi *14+2(14)\\\\57.32-28=\frac{\theta}{360} *2\pi *14\\\\29.32=\frac{\theta}{360} *2\pi *14\\\\ \frac{\theta}{360}=\frac{29.32}{2\pi *14} \\\\\frac{\theta}{360}=0.33\\\\\theta=120^o$