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statuscvo [17]
3 years ago
14

Which expression has a value of 20?

Mathematics
2 answers:
Semmy [17]3 years ago
8 0
Hello :),
<span>=(16−8)×(2+4)(16−8)×(2+4)
</span>=8×6×8×6
=2 304
==========================================================
=<span>(16−8)×2+4(16−8)×2+4
</span>=8×2+4×8×2+4
=16+32×2+4
=16+64+4
=84
==========================================================
<span>=16−(8×2+4)16-(8×2+4)
=16-20</span>×16-20
=-4×(-4)=16
==========================================================
<span>=16−8×(2+4)
</span>=16-8×6
=16-48
=-32
==========================================================
vovangra [49]3 years ago
5 0
<span>(16−8)×2+4(16−8)×2+4
</span>
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What is the rate of change for the sequence shown below. (1,2) (2,2.5) (3,3) (4,3.5) (5,4)
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3 years ago
One uranium atom has a mass of 3.95 x 10^-22 grams.
creativ13 [48]
Remember
(ab)/(cd)=(a/c)(b/d)
and
\frac{x^n}{x^m}=x^{n-m}

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hmm, I estimate, 4 of them

x=number of attoms
mass of 1 times x=1*10^3
3.95*10^-22 times x=1*10^3
divide both sides by 3.95*10^-22
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a million has 9 zeroes
so 24 zeroes is alot that is a <span>septillion, so there are 2.5316 septillion uranium atoms in 1kg


a. 4
b. underestimate

</span>
5 0
3 years ago
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