3 years ago

Generally what do the elements in a group have in common with each other?

1 answer:

6 0

They have the same number of valence electrons which, in general, gives them similar oxidation numbers and other similar chemical and physical properties. The similarities are most pronounced in the groups at either side of the standard periodic table, and are least pronounced for the transition and rare earth elements.

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What is the remainder for 89,736 divided by 40?

tigry1 [53]

Answer: 2,243.4

Step-by-step explanation:

7 0

3 years ago

What is the equivalent of 243 to the power of (2/5)

nasty-shy [4]

<span>(243)^(2/5) = ?
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The 5 in the denominator means "take the 5th root".
The 2 in the numerator means "square".

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</span><span>Taking the 5th root first you get:
(243)^(2/5) = 3^2
Now squaring gives you
3^2 = 9

So the answer is 9.

Hope this helps :)
~Davinia.
</span>

6 0

3 years ago

Given the regular octagon, what is the length of any side?

Jlenok [28]

Answer:110

Step-by-step explanation:x^2+17x=15x+35

x^2+17x-15x-35=0

x^2+2x-35=0

delta=2^2-4*1*(-35)=4+140=144

x1=(-2+V144)/2=(-2+12)/2=10/2

x=5

so 15*5+35=75+35=110