3 rows
6 columns
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Now you can count the stars shown in the diagram, or multiply 3 times 6, for your answer, 18 cubes
Both angles 2x+6 and 96 shown are vertically opposite angles and vertically opposite angles are always equal
so 2x+6 should be equal to 96
so 2x + 6 = 96
Now we have to solve for x here and have to get x by itself on left hand side
So first get rid of +6 by doing its opposite -6 on both sides
2x + 6 -6 = 96 -6
2x = 90
Now to get x by itself we have to get rid of 2, for that divide both sides by 2

x = 45
Hence proved that x = 45
He mails
(1000) x (the number of weeks he keeps it up)
of them.
$x=213$
For first six weeks she saved 213$
Now
For next 6weeks

Total savings:-
.