Answer:
-1 and -2
Step-by-step explanation:
f(x) = 4x² − 8kx + 8x −9
f(x) = 4x² − 8(k−1)x − 9
If one root of f(x) is the opposite of the other, then f(x) must be a difference of squares, which means -8(k−1) = 0.
-8(k−1) = 0
k = 1
Therefore, the other polynomial is:
x² + 3x + 2
(x + 1) (x + 2)
The zeros are -1 and -2.
Answer:
54/120 or 108/240
Step-by-step explanation:
Answer:
I think it's A and D
Step-by-step explanation:
For option A, y would be the height or total growth, and x would be time or months and total height = 0.23 feet × 7.5 months
for option D, y would be the total amount of money spent and x would be the number of granola bars bought. total money spent = $0.23 × number of granola bars bought
Options B and C don't work because we don't know the initial values and an initial value would be represented in the equation.
In option E, 0.23 represents the total growth in 7 days, so it would be the total instead of the rate of change
Answer:
x = -3
Step-by-step explanation:
Distribute the negative
Combine like terms on Left Hand Side
Substract 3 from both sides
Divide both sides by -1 to get rid of the negative
∴
Answer:
$44.40
Step-by-step explanation:
Markup is the difference between the sell price and the cost of building
1) Find total cost of building the lawn mower: $35 + $39.17 + $36.43 = $110.6
2) Subtract the total cost from the sell price: $155.00 - $110.6 = $44.40