shololarukayat
shololarukayat shololarukayat
  • 26-05-2020
  • Mathematics
contestada

find the value of which will make the quadratic expression 9y²-12y+k is a perfect square
a) 5
b) -4
c) 4
d) 9​

Respuesta :

Yasaswipyakurel4
Yasaswipyakurel4 Yasaswipyakurel4
  • 26-05-2020

Answer:The value of k must be[c] to make this quadratic equation a perfect square.

Step-by-step explanation:

I don't say you have to mark my ans as brainliest but my friend if it has really helped you plz don't forget to thank me....

Answer Link
lucasella
lucasella lucasella
  • 26-05-2020

Answer:

c)4

Step-by-step explanation:

9y²-12y+k

(3y)²-2*3*2*y+2²=(3y-2)²

k=2²=4

Answer Link

Otras preguntas

who is known as the "Father of Medicine." A. Galen B. Aristotle C. Galileo D. Hippocrates
I really need help with my take home test. The problem is f(x)=(x-7)/2, what is the value of (f°f^-1)(3). Really struggled with this one. Options are: 1) 2x+72)
Why did groups such as Pollution Probe and Greenpeace form? What are their main objectives?
Solve for x in the equation? a/(2x-c) = -1
how do I solve for x - 5 = x + 7
Please help fast!!! i will give brainliest for correct answer!!!!
Question 21 please?! -I need this as quick as possible. -Civics/History .
Which president initiated conflict with both Great Britain AND Mexico, successfully negotiating treaties with both? A) John Tyler B) James K. Polk C) Zachary
what will be the new volume of a 250mL sample of gas at 300 k and 1 atm if heated to 350 k at 1 atm law use:
if line XZ is 2ft, line YZ=18in. what is the length of line XY