This is what my math teacher had me write down!
Step-by-step explanation:
Discriminant = 16k² - 4(2)(-5k)
Since 16k² + 40k < 0, 2k² + 5k < 0, k(2k + 5) < 0.
Therefore -5/2 < k < 0.
Answer:
its the last one.
Step-by-step explanation:
easy way to do inverse functions:
write out equation :
y = 2
+ 2
Switch the x and y:
x = 2
+ 2
Solve for y :
x = 2 + 2
subtract 2 both sides
x - 2 = 2
Divide both sides by 2
- 
=
reduce fraction and square root both sides
Answer:
I believe that your answer is 15
Step-by-step explanation:
Because you just add 12+3 .
Answer:
9 = x (assuming 15 is the hypotenuse)
Step-by-step explanation:
15^2 = 12^2 + x^2
225 = 144 + x^2
subtract 144 from both sides
81 = x^2
square root both sides
9 = x
