Speed=distance/time
Diana: (3/8)/5=3/(5*8)=3/40 mi/s=0.075 mi/s
Fernando: 2 1/2 miles=5/2 miles
(5/2)/(3/4)
multiply outer values and divide by the inner values:
=(5*4)/(2*3)=20/6=10/3 mi/h= 3 1/3 mi/h=3.3...mi/h
Answer:
100
Step-by-step explanation:
(50-45)*20
=5*20
=100
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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
Answer:
13
Step-by-step explanation:
Divide 12 by 3 first because of (PEMDAS) you get 4 tge add that to the 9 the you get 13.
P = parentheses
E = exponent
M = multiplication
D = division
A = addition
S = subtraction