Hello :
2x²+4x-5 = <span>a(x-h)2+k =a(x²-2xh+h²)+k
</span>2x²+4x-5 = ax²-2ahx +ah² +k
a=2.....(1)
-2ah = 4.....(2)
ah²+k=-5...(3)
in (2) : -4h=4 h=-1
in(3) : 2(-1)²+k=-5 k = -7
conclusion : 2x²+4x-5 = 2(x+1)²-7
<span>the vertex is : A(-1,-7)</span>
I hope this helps you
Area=length ×width
Area=25×13
Area =325
Answer:
15.50h + 50 > 400
Step-by-step explanation:
Given;
Weekly salary = $50 per week
Additional pay = $15.50 per hour
The variable h represent the number of hours worked per week
The total amount earn per week is;
Weekly salary + total additional pay per week
50 + 15.50h
To earn more than $400 this week, the total amount earned in a week must be greater than 400;
15.50h + 50 > 400
Solving the equation we have;
15.50h > 400-50
h > (400-50)/15.50
h > 22.58 hours per week.
