Answer:
The required equation is .
Step-by-step explanation:
If a quadratic equation is , then the quadratic formula is
The given quadratic equation is
Here, a=1, b=-9 and c=-20.
Substitute a=1, b=-9 and c=-20 in the above quadratic formula.
Therefore the required equation is .
Answer:
Step-by-step explanation:
We have been given the equation:
And
Second equation can be rewritten as:
We will solve the equations:
(1)
(2)
Multiply equation (1) by 5 and equation (2) by 3 we get:
(3)
(4)
Now, subtract (4) from (3) we get:
Now substitute in equation (1) we get:
Answer:
5
Step-by-step explanation:
<u>Markup . . . </u>
-- I buy a cabbage for $1.00 and put it on the shelf in my store.
-- I mark it up 100% . . . I offer it for sale for $2.00
-- I mark it up 200% . . . I offer it for sale for $3.00 .
<u>Markdown . . .</u>
-- I buy a cabbage for $1.00 and put it on the shelf in my store.
-- I mark it down 100% . . . I sell it for zero. (I give it away.)
-- I mark it down 200% . . . I give you $1.00 to take it home with you.
This is a simple conversion. 1 gram equals .0022 lbs, meaning this is what you have to do: 58g*(.0022lbs/1g). The grams cancel out, and you're left with pounds.