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Mariulka [41]
2 years ago
11

6870000000000000 scientific notation

Mathematics
1 answer:
hjlf2 years ago
8 0

Answer:

6.87 x 10^15

Step-by-step explanation:

6.87 * 10^15 = 6870000000000000

Hope this helps :)

P.S. Message me if this is wrong

P.P.S Hope you have a great day!

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Is 20 miles every 3 hours a unit rate
GrogVix [38]
No.  A unit rate would be something like 6 2/3 miles per hour, which is the same speed as above.
6 0
3 years ago
4 times a number less than 6 is 8 more than twice that number. find the number.
Serhud [2]
First, let's break the worded equation up into two parts:

- "<span>4 times a number less than 6'

This is 4 * (6-x)

- "</span><span>8 more than twice that number"

This is 2x+8


Now combine these two expressions:

</span>4 * (6-x) =  2x+8

4 * (6-x) = 2 * (x+4) 

2 * (6-x) = x+4

12-2x = x+4

-3x = -8

x = 8/3


If you have any questions, please leave it in the comment section below.

Hope this helps!
7 0
3 years ago
23. According to one of Tolkien's essays, there were 144 elves originally created by the gods in Middle-Earth. If their numbers
oksian1 [2.3K]

Answer:

D

Step-by-step explanation:

elves in 1000 years = elves now x (rate of increase)^time

elves increase every century. there are ten years in a century. thus time = 1000/100 = 10 years

144 x (3)^10 =  8,503,056 elves

5 0
2 years ago
Find all the solutions of each equation by factoring. x^4 14x^2-32=0
Natasha2012 [34]
<span> x = 4 
x = -4<span>  
x=  0.0000 - 1.4142 i 
</span><span>  x=  0.0000 + 1.4142 <span>i </span></span></span>
3 0
3 years ago
Help meeeeeeeeeeeeeee pleaseeeeeee
qwelly [4]

Answer: 10.8 seconds

Step-by-step explanation:

-16t^2 +170t+40=10\\\\16t^2 -170t-30=0\\ \\ t=\frac{-(-170) \pm \sqrt{(-170)^2 -4(16)(-30)}}{2(16)}\\\\t \approx 10.8 \text{ } (t > 0)

6 0
1 year ago
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