1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leno4ka [110]
3 years ago
11

The highway mileage m in miles per gallon for a compact car is approximated by m(s) = -0.025s2 + 2.45s - 30, where s is the spee

d in miles per hour. What is the maximum mileage for this compact car to the nearest tenth of a mile per gallon?
Mathematics
1 answer:
kozerog [31]3 years ago
6 0
Highest mileage
m(s) = -0.025s2 + 2.45s - 30
This quadratic equation lokks like a upside down parabolla
So as it is a form of mileage gunction of speed, its maximum value should be K

The "a" in the vertex form "<span>y = a(x – h)2 + k</span>" of the quadratic is the same as the "a" in the common form of the quadratic equation, "<span>y = ax2 + bx + c</span><span>".
</span>

<span>To find the vertex, I look at the coefficients a<span>, </span>b<span>, and </span>c. The formula for the vertex gives me:<span>Y= -0.025s2 + 2.45s - 30
</span><span>h = <span>–b</span>/<span>2a</span> =  -2.45/2× -0.025=49</span><span>Put value of h to get K</span><span>k=-0.025(49)^2+2.45×(49)-30</span><span>k=  -30.025</span><span>k=  -</span>30.0<span>
</span></span>
You might be interested in
Nina can swim 4 laps in 2 1/3 minutes. At this rate, how many laps can she swim in one minute?
dusya [7]

Answer:

1.75

Step-by-step explanation:

idk tbh

6 0
3 years ago
Katniss and Peeta find the sum of their ages which is 50 years. Peeta is five years older than Katniss. What are their ages?
Lostsunrise [7]

Answer:

peeta is 30 and kat is 20 i think

Step-by-step explanation:

7 0
3 years ago
Please help!! Math | 25 points :)
arlik [135]

Values of the composite function:

(g\cdot f)(-1)=6

(g\cdot f)(0)=7

(f\cdot g)(-1)=3

(f\cdot g)(4)=2

Step-by-step explanation:

Given two functions f(x) and g(x), their composite function is given by

(f\cdot g)(x) = f(g(x))

Which means using the output value of g(x) as input for f(x).

Let's start by computing

(g\cdot f)(-1)

First, we compute the value of f(-1), which is (from the graph)

f(-1) = 1

Now we use this value as input into g(x); we notice that at x = 1, the value of g(x) is 6, therefore:

(g\cdot f)(-1)=6

Now we evaluate

(g\cdot f)(0)

First, we compute the value of f(0), which is (from the graph)

f(0) = 0

Now we use this value as input into g(x); at x = 0, the value of g(x) is 7, therefore:

(g\cdot f)(0)=7

Now we evaluate

(f\cdot g)(-1)

First, we compute the value of g(-1), which is (from the graph)

g(-1) = 5

Now we use this value as input into f(x); at x = 5, the value of f(x) is 3, therefore:

(f\cdot g)(-1)=3

Finally we evaluate

(f\cdot g)(4)

First, we compute the value of g(4), which is (from the graph)

g(4) = 4

Now we use this value as input into f(x); at x = 4, the value of f(x) is 2, therefore:

(f\cdot g)(4)=2

Learn more about composite functions:

brainly.com/question/2723982

brainly.com/question/2456302

brainly.com/question/1949601

brainly.com/question/1900154

#LearnwithBrainly

6 0
3 years ago
Pls hurry!!!!!!! What value(s) of x will make x^2 = 100 true?
Darya [45]

Answer:

\large\boxed{\fcolorbox{x=10 }{}{}} OR \large\boxed{\fcolorbox{x=-10 }{}{}}

Let's solve the equation step-by-step:

First, you must find the square root:

x = ± \sqrt{100}

We know that 10 × 10 = 100 and -10 x -10 is 100

that means that the square root is either  10 or -10

And we also know that 10^2 -10^2 are both 100

meaning that x = 10^2 OR -10^2

4 0
3 years ago
Write the number 0.72 repeating as a fraction or mixed number.
34kurt

8/11 is the fraction

To derive this simply put

72.727272/100 and it reduces to 8/11

8 0
3 years ago
Other questions:
  • The adjustment to record supplies used during the period would be which of the following? A. Debit Supplies; credit Supplies Exp
    5·2 answers
  • X1/3y1/6 rewrite expression in radical form
    7·2 answers
  • Your doctor told you to eat 25 grams of fiber each day. You had 4 grams of fiber for breakfast. What percent of the 25 grams of
    8·2 answers
  • Factor the polynomial -6x^3-12x^2-18x
    11·2 answers
  • How would i describe the relationship?
    12·1 answer
  • 2.) The distance between the entrance of a park and a waterfall on the graph is 4 1/2 inches. Use the scale to
    15·1 answer
  • A recipe calls for 3 cups of flour to make two batches of dinner rolls. One batch mix 15 rolls. Where is making dinner for 12 pe
    8·1 answer
  • Please Help<br><br> If y = 12, then 3y^2 - 5 =
    13·1 answer
  • Please help ! The equation is attached in the photo above :)
    10·2 answers
  • the late fee for library books is $2.00 plus 15 cents each day for a book that is late. If Maria's fee for a late book was $3.20
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!