What value of k makes the trinomial x^2- 10x + k a perfect square?
1 answer:
Answer: 25
Step-by-step explanation: (x-a)² = x² - 2ax + a²
From x² - 10x + k we deduce that 10x = 2·5x and a = 5
Then k = 5²2
You might be interested in
That my dear friend is... 25
Answer:
About 432 people read at least one book per month.
Step-by-step explanation:
36/50 people read at least one book, multiply 36/50 by 12 to make the fraction 432/600.
V = lwh/3
= 5x3x1/3
= 15/3
= 5
Therefore the volume is 5 meter cubed.
Well here : 5 times 9 = 45 and 7 times 7 = 49 so it would be 45/49!
Answer is 0.31. Hope this helps.
