Answer:
a0 = 10
Step-by-step explanation:
We simply want to isolate the variable, a0, so we can find the value in which satisfies this equation:
a0 + -7 = 3
a0 + -7 + 7 = 3 + 7
a0 = 10
Cheers.
Answer:
On the sale of garage One family made $1154 and Second family made $486
Step-by-step explanation:
Given:
Two families have a garage sale together the entire garage sale brought in $1640
Total Cost = $1640
Let the Second made be x
Also given one family made $182 more than twice as much of the second family
One family made = 
Now Total cost is equal to sum of One family and Second family.
Hence framing in equation form we get;

Now solving the equation we get;

Hence,
Second Family made on sale of garage = $486
One Family = 
Hence One Family made on sale of garage = $1154
The diagonals of a trapezoid are equal sometimes,
and they're unequal sometimes.
The diagonals are equal only in an "Isosceles trapezoid" . . .
where the non-parallel sides have equal lengths.