2 years ago

I need help with 1 2 3

Mathematics

1 answer:

g100num [7]2 years ago

7 0

D D B I think this should be right

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Find the area of the shaded region. Round the the nearest tenth.

Brums [2.3K]

Answer:

226.084 sq.m.

Step-by-step explanation:

Radius of circle = 18.6 cm

Area of sector = $\frac{\theta}{360^{\circ} }\pi r^2$

Area of sector = $\frac{123}{360} \times 3.14 \times (18.6)^2$

Area of sector = $371.157 m^2$

Area of triangle = $\frac{1}{2} \times a \times b \times Sin x$

a = OA = radius = 18.6 cm

b = OB = radius = 18.6 cm

x =123 °

Substitute the values in the formula

Area of triangle = $\frac{1}{2} \times 18.6 \times 18.6 \times Sin 123$

Area of triangle = $145.073 m^2$

So, Area of shaded region = Area of sector - Area of triangle

= $371.157 m^2-145.073 m^2$

= $226.084 m^2$

Hence the area of the shaded region is 226.084 sq.m.

5 0

3 years ago

Someone please answer !!!!

Goryan [66]

The answer is C

By the way, that expression means "n choose k". Hope I helped!

7 0

2 years ago

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Multiply and subtract

WITCHER [35]

Answer:

26x³ - 12x² + 5x + 7

Step-by-step explanation:

(2x³ - 3x + 11) - (3x² + 1) x (4 - 8x)
2x³ - 3x+11 - (12x² - 24x³ + 4 - 8x)
2x³ - 3x + 11 - 12x² + 24x³ - 4 + 8x
26x³ + 5x + 7 - 12x²

= 26x³ - 12x² + 5x + 7

4 0

2 years ago

A block of copper weighs 2160g and has a volume of 240cm cubed. what is the density of the copper?

mrs_skeptik [129]

(Mass) 2160g (Divided by) / (Volume) 240cm (Equals) = 9 (Density)

3 0

2 years ago

Find the measure of the missing angle.

alekssr [168]

Answer:

Step-by-step explanation:

The angles are vertical angles and vertical angles are equal

? = 92

4 0

2 years ago

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