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ozzi
2 years ago
9

Which number in the monomial 215x18y3z21 needs to be changed to make it a perfect cube?

Mathematics
2 answers:
Murljashka [212]2 years ago
8 0
Remember
xyz=(x)(y)(z)
if x and y and z are all perfect cubes, xyz is also a perfect cube

remmeber
(x^n)^m=x^(mn)
so if it is perfect cube it can be factored into
(x^n)^3, such taht n is a whole number
basiclaly, see if the expoent is divisble by 3

all of them should be perfect cubes

215x^18y^3z^21

split them up to see which ones need changing

215=5*43, not  a perfect cube
could be changed to 6^3, which is 216

x^18=(x^6)^3

y^3=y^3
z^21=(z^7)^3

the 215 needs to be changed
 
Tanya [424]2 years ago
6 0

Answer: E2020 = 215

Step-by-step explanation:

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Answer:

Ordering a soft drink is independent of ordering a square pizza.

Step-by-step explanation:

20% more customers order a soft drink than pizza, therefore they cannot be intertwined.

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=  0.5 + .7 - 0.35

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P(A') =  1 - P(A)

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=  0.5

P(B') =  1 - P(B)

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=  1 - 0.85

=  0.15

7 0
1 year ago
A biased die has a probability of 1/4 of showing a 5, while the probability of any of 1, 2, 3, 4, or 6 turning up is the same .
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1 year ago
3 (n - 1) + 2 (n + 2)
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2 years ago
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x = -(-5)/2(0.125)
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2 years ago
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Step-by-step explanation:

Given: The manager of a video game store found that 35 of the 140 people who preordered the latest baseball game canceled their orders the day before the game was released.

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