x + 4y = 5
Standard Form for a linear equation is Ax + By = C, where B is not = 0, A is >=0, A is an integer, and -preferably- A, B and C have no common factor. Sometimes ax + by + c = 0 is used instead.
10 - 2x = 8y <=> 10-2x-8y =0 <=> -2x-8y=-10 <=> 2x+8y=10 <=> x+4y=5.
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0.81 squared equals 0.81 x 0.81 The result in standard form is 0.6561
You write 1,095 millionths in standard form as 1.095 × 10-3
0.472 in standard form is 4.72x10-1.
4.375 in standard form is: 4.375 × 100
Standard form is y=mx+by=3x+5 is already in standard form.