Answer:

Step-by-step explanation:
Remove parenthesis: (a) = a



Simplify 

Regards,
Mordancy
Answer:
$390
Step-by-step explanation:
First he has $500-$40=$460
So now he has $460+$30=$490
He has $490-$100=$390
Answer:
1845 cm
Step-by-step explanation:
The formula of triangle is 1/2(b)(h)
B is the height and A is the base.
90 times 41 divided by 2
<h3>
Answer: Choice A) 0.29 dollars</h3>
Work Shown:
16 ounces = 4.69 dollars
16/16 ounces = 4.69/16 dollars .... divide both sides by 16
1 ounce = 0.293125 dollars
1 ounce = 0.29 dollars .... rounding to the nearest cent
The correct answer is option 2.
3 = 0
x - a = 0
x = a
x + b = 0
x = -b
We do not multiply any of these values by 3 because in a way, 3 is acting as another "zero" of the equation. Though, as shown above, it does not equal 0, it still does not apply to any of the other equations solved above.
Hope this helps!! :)