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Ede4ka [16]
3 years ago
7

9 times 9 times what equals 1620

Mathematics
1 answer:
professor190 [17]3 years ago
7 0
9*9*x=1620
81*x=1620 (divide out the 81)
x=20
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this is:

the sets of one element : {a}, {b}, {c}, {d} and the null set; ∅

sets of two elements: {a,b} , {a,c} , {a.d}, {b,c}, {b,d}, {c,d}

sets of three elements : {a,b,c}, {a,b,d}, {a,c,d}, {b,c,d}

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6 0
3 years ago
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Angelina_Jolie [31]

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Step-by-step explanation:

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7 0
1 year ago
Read 2 more answers
Are they unique more than one or no triangle
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