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3 years ago

The diameter of a small grain of sand is about 0.00002 meters, which can be written as 2•10^n

Mathematics

2 answers:

defon3 years ago

6 0

Answer:

N = -5

Step-by-step explanation:

Move the decimal point right until it is right after the first significant figure.

N = 5

But wait! It's a decimal so it has to be negative.

N = -5

Anastaziya [24]3 years ago

4 0

Answer:

N=-5

Step-by-step explanation:

I just wanted the points lol

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I need help finding the answer

spin [16.1K]

The answer is C
you can buy three shirts because 11×3=33 then you use your coupon and it becomes 33-6= 27

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3 years ago

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A cylinder has a volume of 72 cubic inches. What is the volume of a cone with the same height and radius as the cylinder? Show a

nexus9112 [7]

Answer:

24 cubic inches

Step-by-step explanation:

The formulas for the volume of a cylinder and cone are ...

volume of a cylinder = πr^2·h

volume of a cone = (1/3)πr^2·h

For the same radius and height, the cone has 1/3 the volume of the cylinder. Your cone's volume is ...

(1/3)·(72 cubic inches) = 24 cubic inches

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3 years ago

Which is equivalent to (3 + 2i)(3 - 2i)?<br> A) 5 <br> B) 6 <br> C) 9 <br> D) 13

SVETLANKA909090 [29]

Answer: D

Step-by-step explanation:

(3 + 2i) (3-2i) = 13

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3 years ago

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Please help w my geometry! I need to show my work too. 10 points

salantis [7]

Because AB is a midsegment, the length of AB is half he length of XZ so basically you do
2(3x-1)=34.
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4 years ago

Use the quadratic formula to find the solutions to the equation x^2-3x+1=0

Gnom [1K]

Answer:

$x_{1}=\frac{+3+\sqrt{5} }{2}\\\\x_{2}=\frac{+3-\sqrt{5} }{2}$

Step-by-step explanation:

Using:

$x=\frac{-b+-\sqrt{b^{2}-4*a*c} }{2*a}$

we will have two solutions.

x^2-3x+1=0

So, a=1 b=-3 c=1

$x_{1}=\frac{+3+\sqrt{-3^{2}-4*1*1} }{2*1}\\\\x_{2}=\frac{+3-\sqrt{-3^{2}-4*1*1} }{2*1}$

We have two solutions:

$x_{1}=\frac{+3+\sqrt{5} }{2}\\\\x_{2}=\frac{+3-\sqrt{5} }{2}$

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3 years ago