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djverab [1.8K]
3 years ago
15

Simplify the given expression below: (4+2i)-(1–7i)

Mathematics
1 answer:
emmasim [6.3K]3 years ago
4 0

Answer:

3 + 9i

Step-by-step explanation:

(4 + 2i) - (1 - 7i)

distribute the (-)

(4 + 2i) - 1 + 7i

combine like terms

3 + 9i

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Find the area of each sector.
sergey [27]

Answer:

D. \frac{525\pi}{8} m²

Step-by-step explanation:

Area of the sector = ½*r²∅

Where,

Radius (r) = 15 m

Angle in radians (∅) = \frac{7\pi}{12}

Plug in the values into the equation

Area of sector = \frac{1}{2} * 15^2 * \frac{7\pi}{12}

Area of sector = \frac{1}{2} * 225 * \frac{7\pi}{12}

Area of sector = \frac{1*225*7\pi}{2*12}

Area of sector = \frac{1,575\pi}{24}

Simplify

Area of sector = \frac{525\pi}{8}

5 0
3 years ago
Help me please with this question
docker41 [41]

Answer:

P=152

A=79

Step-by-step explanation:

add all the sides

6 0
3 years ago
Given: BD is a diameter<br> m 1= 100°<br> m BC = 30°<br> m CD =<br> 100<br> 150<br> 330
sertanlavr [38]

Answer:

150

Step-by-step explanation:

330 is to big because the diameter is 180

100 is angle 1 and CD is bigger

so it would be 150

hope i helped

4 0
3 years ago
What is the final amount if 700 is increased by 4% followed by a further 3% increase?
Archy [21]
Is my Guss is 300 by the fardes I can think of
3 0
3 years ago
Can someone help me please
masya89 [10]

Answer:

A) (3,-8); Reflection

Step-by-step explanation:

The question kind of gave you a hint. Look at how the coordinate point is arranged...

(-y,-x)

That means all positive become negatives and all negatives become positives. This gives you the coordinate of (3,-8).  

As for reflection or rotation, the image's coordinates FLIPPED, like how images do in a mirror's reflection.

This means the answer would be A) (3,-8); Reflection.

4 0
3 years ago
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