7. Solve for x.V

t{?} " align="absmiddle" class="latex-formula">
x+ 3 = 20

Mathematics

1 answer:

ch4aika [34]3 years ago

6 0

7+3=20

X+3=20
-3 -3
+3 & -3 cancel out
Then 20 minus 3 equals 7
So x=7

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Step-by-step explanation:

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X + Y = Z

The possible value for Z are Z = 0 when X = 0 and Y = 0

and Z = 1 when X = 0 and Y = 1 or when X = 1 and Y = 0

If X and Y can not be both equal to 1 , then the probability mass function of the random variable Z takes on the value of 0 for any value of Z other than 0 and 1,

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