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Alexeev081 [22]
3 years ago
12

Please help with this its confusing somehow :(​

Mathematics
1 answer:
galben [10]3 years ago
3 0

Answer:

D

Step-by-step explanation:

x²=9

x=3; -3

ბსჰსჯანანაკ

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Convert 432 in base seven to base four.​
Paraphin [41]

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Read 2 more answers
Let A and B be subsets of a universal set U and suppose n(U)=400, n(A)=135, n(B)=80, and n(A n B)=60. Find the number of element
Alexxandr [17]
Use A' for A complement, etc. and n = intersection &cap;.
n(A' n B')
=n(A u B)'   by the de Morgan's law
=nU-n(nA+nB-n(AnB))     n(A u B) = nA + nB - n(AnB)  and nX'=nU-nX
=400-(135+80-60)
=400-155
=245
5 0
3 years ago
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