Answer:
<u>f(x)=x²-2x-2</u>
Step-by-step explanation:
<em><u>f(x)=ax²+bx+c</u></em>
f(0)=-2 => c= -2
f(1)= -3=> a+b-2=-3; a+b=-1
f(2)= -2; 4a+2b-2=-2; 4a+2b=0; 2a+b=0
a+b=-1 and 2a+b=0
2a+b-(a+b)=0+1=> a=1
2+b=0=> b=-2
f(x)=x²-2x-2
Here's what I've done:
Represent the set of 5 items by {a,b,c,d,e}. Assume that these items have already been arranged in ascending order.
The middle item, c, has the value 12.
Since "mode" means "most frequently appearing item," let's assume that d and e are both 15.
If the range is 9, we could then write 15-9 = 6, meaning that a = 6.
Then we have {6,b,12,15,15}
To find b, sum up {6,b,12,15,15}, equate the result to 11, and solve for b.
Answer:
$71, 250
Step-by-step explanation:
Given that:
Fixed salary of Lenny = $40,000
Commission on the cars sold by Lenny = 1.25%
Cost of each Lexus car = $50,000
Total worth of which cars are sold by Lenny = $2,500,000
To find:
Lenny's total income after a year?
Solution:
Lenny's salary consists of two parts i.e. Fixed salary and the variable part as per the commission depending upon the sales done by Lenny.
Fixed salary = $40,000
Commission earned = 1.25% of $2,500,000
Therefore, Lenny's total salary after a year = $40,000 + $31,250 = <em>$71, 250</em>
Answer:
$7.50
Step-by-step explanation:
The answer to your question is the last one through the method of competing the square