-7(3e-2f+4)+6e-2
(distribute the -7)
-21e+14f-28+6e-2
(combine and like terms)
answer = -15e+14f-30
Answer:
A = a + b / 2 x h
Step-by-step explanation:
Area is equal to side one plus side two divided by two then you multiply by the height of the trapezoid. Hope this helps!
Answer:
Option D.
or 
Step-by-step explanation:
<u><em>The correct question in the attached figure</em></u>
we have
----> inequality A
subtract 5 both sides


divide by 3 both sides

The solution of the inequality A is the interval [-2,∞)
----> inequality B
adds 7 both sides


divide by -2 both sides
Remember that when you multiply or divide both sides of an inequality by a negative number, you must reverse the inequality symbol

The solution of the inequality B is the interval (-∞,-6]
therefore
The solution of the system is
or 
C. $34.50. A car gets 30 miles per gallon, if the gasoline cost $1.15 per gallon, a 900 miles trip will cost $34.50
This exercise can be solved by simply arithmetic.
Divide the total miles by the miles per gallon:
900/30 = 30
Then, multiply this value by the cost per gallon:
30 x $1.15 = $34.50
3.24 kilograms
Simply just add 1.78 kg +1.46 kg for the total mass of 3.24 kg