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lisov135 [29]
3 years ago
14

What is the square root of -16 -8i -4i 4i 8i Pls explain tooo

Mathematics
1 answer:
erik [133]3 years ago
3 0
4i,
Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.
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Harriet bought 2kg of potatoes for $1.50 how much would it cost for 1 kg
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2 kg = 1.5 
1 kg is half of 2 kg, therefore, half the price. Half of 1.5 dollors = 75 cents
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List all the factors of 40
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3 years ago
Find the surface area of composite figure. use 3.14 for π. round to the nearest tenth
ExtremeBDS [4]

Combining of the two cylinders gives a composite figure that has the surface area of a solid cylinder of radius 7 mm and height 6 mm, such that the surface area of the figure is approximately 571.5 mm².

<h3>Which method can be used to find the surface area of the figure?</h3>

Radius of the inner cylinder, <em>r</em> = 3 mm

Radius of the outer cylinder, <em>R</em> = 7 mm

Height of the cylinders, <em>h</em> = 6 mm

Given that the inner cylinder exactly fits into the outer cylinder, we have;

The surface area of the composite figure is the surface area of the hollow outer cylinder + The area of the top and bottom of the inner cylinder.

Which gives;

The surface area of the composite figure, <em>A</em>, is the surface area of a solid cylinder, using the dimensions of the hollow outer cylinder.

  • A = 2•π•R² + 2•π•R•h

Which gives;

  • A = 2 × π × 7² + 2 × π × 7 × 6

Where, π = 3.14, we have;

A = 2 × 3.14 × 7² + 2 × 3.14 × 7 × 6 ≈ 571.5

  • The surface area of the composite figure, <em>A </em>≈ 571.5 mm²

Learn more about the analyzing of composite figures here:

brainly.com/question/21135654

#SPJ1

4 0
2 years ago
3. What is the molar mass of SO2?
Arada [10]

Answer: 64.066 g/mol

hope this helps :D

Step by Step: To find the molecular mass of SO2, you are going to want to search out the mass of SO2. The mass of sulfur is 32AMU, and also the mass of oxygen is 16AMU, then times two thanks to the subscript, so 32. Add those up, and 32+32=64AMU, which is your mass for the entire.

8 0
2 years ago
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Can you please help me<br> sorry this is hard for me but i’ll give u brainliest and 70 points
devlian [24]

Answer:

-9 + 5 = -4

Step-by-step explanation:

I think that's what your asking.....

6 0
2 years ago
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