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3 years ago

Add the complex numbers. (5-2i)+(2+4i)

Mathematics

1 answer:

Ksju [112]3 years ago

3 0

Answer:

2i + 7

Step-by-step explanation:

Given

(5 - 2i) + (2 + 4i) ← remove parenthesis

= 5 - 2i + 2 + 4i ← collect like terms

= 2i + 7

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PLEASE ANSWER, WILL GIVE BRAINLIEST!

kumpel [21]

<h3>Answer: b = 17</h3>

====================================================

Explanation:

The line must go through the point (5,2) which means x = 5 and y = 2 pair up together.

We'll plug these x and y values into the equation and solve for b.

y = -3x+b

2 = -3(5)+b

2 = -15+b

2+15 = b

17 = b

b = 17

The equation y = -3x+b turns into y = -3x+17

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2 years ago

Please answer <br> ( will give brainlst)

serg [7]

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2 years ago

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Hi! Please help, I'd appreciate it!

Romashka-Z-Leto [24]

The volume of sphere is $\frac{1372}{3}\pi$ feet cubed.

Step-by-step explanation:

Given,

Surface area of sphere = 196π square feet

Surface area of sphere = 4πr²

We will find radius of sphere.

$4\pi r^2=196\pi$

Dividing both sides by 4π

$\frac{4\pi r^2}{4\pi}=\frac{196\pi}{4\pi}\\\\r^2=49$

Taking square root on both sides

$\sqrt{r^2}=\sqrt{49}\\r=7$

The radius is 7 feet.

Volume of sphere = $\frac{4}{3}\pi r^3$

$Volume=\frac{4}{3}\pi (7)^3\\\\Volume= \frac{4}{3}\pi *343\\\\Volume = \frac{1372}{3}\pi$

The volume of sphere is $\frac{1372}{3}\pi$ feet cubed.

Keywords: volume, surface area

Learn more about surface area at:

#LearnwithBrainly

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3 years ago

Please help i never learned this yet lol (Will mark brainliest!!) <br> thx!! :)

galben [10]

Answer:

Step-by-step explanation:

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2 years ago

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Rearrange the formula d = m/ v for v.

RUDIKE [14]

If you are looking for volume you want v by itself so your formula would look like this : d*m=v
hope this helps

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3 years ago

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