Answer:
Step-by-step explanation:
Ending depth = -287
Starting d<u>epth= -212</u>
Difference = -75 feet
The submarine plans on dropping 15 feet a minute.
Time = displacement / time = -75/-15 = 5 minutes.
Answer: D
The function in vertex form is
⇒ 3rd answer
Step-by-step explanation:
The vertex form of the quadratic function f(x) = ax² + bx + c is
f(x) = a(x - h)² + k, where
- a is the coefficient of x²
- (h , k) are the coordinates of the vertex point
, wher b is the coefficient of x- k = f(h), that means value f(x) when x = h
∵ f(x) = x² + x + 1
∴ a = 1 , b = 1
∵ 
- Substitute the values of a and b to find h
∴ 
∴ 
Substitute the value of x in f(x) by the value of h to find k
∵ f(
) = 
∴ f(
) = 
∴ f(
) = 
- k is the value of f(x) when x = h
∵ h = 
∴ k = f(
)
∴ k = 
Substitute the values of a, h and k in the vertex form
∵ f(x) = a(x - h)² + k
∵ a = 1 ,
, 
∴ 
∴ 
The function in vertex form is 
Learn more:
You can learn more about the quadratic functions in brainly.com/question/9390381
#LearnwithBrainly
Paul y = 2x+6
x intercept when y=0
0 = 2x+6
-6 = 2x
divide by 2
x=-3
Stuart y = mx+2 (y intercept is 2)
one of the points is (-3,0) the same x intercept)
0 = m(-3) +2
subtract 2 from each side
-2 = -3m
divide by -3
2/3 =m
y = 2/3 x+2
Paul y = 2x+6
Stuart y = 2/3 x+2
The slope of Paul's line is greater than Stuart's line.
Answer:
5(3x-5)
Step-by-step explanation:
This might be wrong!