To use the quadratic formula properly, you first would want to set your quadratic equation equal to zero by moving all terms to one side and combining like terms. That would look like:
. Now, you can use the quadratic formula:
; note the "+" after the "-b" term should actually be a +/- as there are 2 answers to a quadratic. Last, plug in the correct numbers for a, b, and c to get your answer.
Answer:
let x = the number of nickels
the number of pennies can be represented by (56 - x)
.05x + .01(56 - x) = 1.52
5x + (56 - x) = 152 if in the above line we multiply both sides of the equation by 100
4x + 56 = 152
4x = 96
x = 24
There are 24 nickels and 56 - 24 = 32 pennies
24 nickels are worth 24 * 5 = $1.20 and 32 pennies are obviously worth 32 cents, so the total is 1.20 + 0.32 = $1.52
Step-by-step explanation:
<span>The exponential equation for this is given by: A = Be^t.
Where A = 1700 B = 100 e =?
1700 = 100e^(8)
e^8 = 17000/100 = 170
So e = 8âš170 = 1.9</span>