Answer:
x = 5, x = 15; The zeros represent the number of photos printed to produce a maximum profit.
Step-by-step explanation:
F(x) = −x²+ 20x − 75
Let's f(x)= 0
0= -x²+20x-75
0= x²-20x+75
0=x²-5x-15x+75
0= x(x-5)-15(x-5)
0= (x-5)(x-15)
The zeros are
X= 5 or x = 15
And the xeros represent a number of photos printed to produce maximum profit
7a+21=56
Begin by subtracting 21 on both sides:
21-21=0 so the 21 in the left cancels, then 56-21=35
Your new equation will be
7a=35
Finally, divide by 7 on both sides:
7/7=1 and 35/7=5
your answer will be
a=5
The ratio of $2 to $5 is 3: 1
3x$2 + 1x$5 = $11
A set of 3 $2 and 1 $5 gives you $11.
Assumed all 160 coins are $1
Total value = $100
Difference in the value = $300 - $100 = $200
Difference in the $1 and the set of $2 and $5 = $11 - $1 = $10
Number of set of $2 and $5 = $200 ÷ $10 = 20
Calculate the number of $2 and $5 in the 20 sets:
Number of $2 = 3 x 20 = 60
Number of $5 = 1 x 20 = 20
Number of $1 = 160 - 60 - 20 = 80
Answer: There are 80 $1, 60 $2 and 20 $5.
Answer:
So first you make a expression for the length and width.
(a^2+3)x(a^2+2a+5)
(2a+3)x(4a+5)
Combine like terms
(2a+4a)x(3+5)
6ax8
This is the area
Step-by-step explanation: