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sdas [7]
4 years ago
10

Stefan is conducting an experiment to find the level of pollution in the air. He found that there are about 3 billion dust parti

cles in one square meter of space. What is the approximate weight of 3 billion dust particles, if one dust particle weighs 4.66 × 10-12 grams? 1.4 × 10-4 grams
Mathematics
2 answers:
anygoal [31]4 years ago
3 0
140 grams hope it helps out
LenaWriter [7]4 years ago
3 0
I am 100% sure it is 140 grams hope this helps.
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I need help with this last question.
blondinia [14]

Answer:

Step-by-step explanation:

length=1 m

base of triangle=10 m

height=5m

volume= 1/2×10×5×1=25 m cube.

slant height l=√(5²+5²)=√50=5√2

slant surface area=2[5√2×1]=10√2

area of front and back=2×1/2(10×5)=50

total surface area=50+10√2≈50+14.14≈64.14 m²

8 0
3 years ago
Find the mode of this data.<br> 2, 8, 14, 7, 8, 13, 2, 20, 8, 17
Varvara68 [4.7K]

Answer:

8

Step-by-step explanation:

the mode is the number that shows up in the data the most times

4 0
4 years ago
How would the expression x^3-8 be rewritten using difference of cubes ​
LUCKY_DIMON [66]

Answer:

(x - 2)(x² + 2x + 4)

Step-by-step explanation:

A difference of cubes factors in general as

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note 8 = 2³ = 8 ⇒ b = 2 , with a = x

Hence

x³ - 8

= x³ - 2³

= (x - 2)(x² + 2x + 2²) = (x - 2)(x² + 2x + 4)

6 0
3 years ago
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PLEASE⁉️⁉️⁉️ ILL MARK BRAINLY ‍♀️‍♀️⁉️⁉️
lilavasa [31]

Answer:

where are the expressions??

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the departure time is 2:24 pm

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