15x²+16x+4 =0 (ax² +bx +c=0)
Δ = b²-4ac =256 - 4×15×4 =16
x1 = (-b+√Δ) / 2a = (-16+√16) / 30 =( -16+4) / 30 = -12/30 = - 2/5
x2 = (-b -√Δ) / 2a = (-16 -√16) / 30 = (-16 -4) /30 = -20/30 = -2/3
Answer: h=7
Step-by-step explanation:
By definition the function in vertex form is:

Where (h,k) is the vertex of the parabola.
You must group the terms that contain the same variable in the function:

Complete the square as following:

Now you must rewrite it as following:

Then:
h=7
Answer:
f(x) = 25,000 ( 1 + 0.025 )ˣ
Step-by-step explanation:
Given word problem becomes
f(x) = 25,000 ( 1 + 0.025 )ˣ
Answer:
50 ft2
Step-by-step explanation:
im not sure if this is right but this is what i got when i worked it out
= 5x + 35 = -3
- 35 = -35
5x = -38
/ 5 = / 5
x = -7.6