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sergeinik [125]
3 years ago
12

(3 - i) + (1 - 2i) =

Mathematics
1 answer:
eimsori [14]3 years ago
5 0
(3 - i) + (1 - 2i)
= 3 + 1 - i - 2i
= 4 - 3i
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The radius of a sphere is 3 inches. Which represents the volume of the sphere?
Mrac [35]

Answer:

b

Step-by-step explanation:

The volume (V) of a sphere is calculated as

V = \frac{4}{3}πr³ ( where r is the radius )

Here r = 3, thus

V = \frac{4}{3}π × 3³

   = \frac{4}{3}π × 27 = 4π × 9 = 36π in³ → b

3 0
3 years ago
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7. The ordered pairs ((-1,-9), (5,9). (7.15)) are included in which function?<br> 14
Sholpan [36]

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C. y=3x-6

Step-by-step explanation:

6 0
2 years ago
Last month, 17 people showed up to help a local charity. This month, 55 people volunteered. What is the percentage increase?
astra-53 [7]

Step-by-step explanation:

The formula for percent change is

change/original.

So let's subtract 17 from 55 to find the change. 55-17=38

This is the change. Now we divide it by the original, 17.

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about 223.53 percent

6 0
3 years ago
Find the angle theta in radians.<br> ( PLEASE SHOW STEPS )
yKpoI14uk [10]
Hello!

As you can see, we have a radius of 6. If we divide, this means that this is 2.5 radians. To convert radians to degrees we use the formula below.

\frac{180}{ \pi }x

First of all we divide 180 by pi.

180/\pi≈57.3

Now we multiply by 2.5

57.3(2.5)=143.25°

Note that the angle we see is obtuse, or greater than 90°.

Therefore, ∠<span>θ</span>≈143.25°

Now we need to convert this back into radians. This can be represented by the equation below.

\frac{ \pi }{180}x

First we divide pi by 180 then multiply by our angle.

\pi/180(143.25)≈2.5

Therefore, our angle theta is about 2.5 radians.

I hope this helps!
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3 years ago
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What is $45 with a markup of 57%
Marrrta [24]
45/100 x 57 + 45 = $70.65
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3 years ago
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