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
timofeeve [1]
2 years ago
11

David earns $7.75 per hour working at a local fast food restaurant. Last week David worked 19.2 hours. How much money did David

earn last week? (HELP)
Mathematics
1 answer:
kifflom [539]2 years ago
6 0
The Answer: $148.80 just multiply
You might be interested in
Find the intervals on which​ f(x) is​ increasing, the intervals on which​ f(x) is​ decreasing, and the local extrema. f (x )equa
Kaylis [27]

Answer:

f(x) is increasing in the intervals (-∞,-4) and (9,∞)

f(x) is decreasing in the ingercal (-4,9)

The local extrema is:

local max at (-4,496)

and local min at (9,-1701)

Step-by-step explanation:

In order to solve this problem we must start by finding the derivative of the provided function, which we can find by using the power rule.

if f(x)=ax^{n} then f'(x)=anx^{n-1}

so we get:

f(x)=2x^{3}-15x^{2}-216x

f'(x)=6x^{2}-30x-216

in order to find the critical points we mus set the derivative equal to zero, since the local max an min will happen when the slope of the tangent line to the given point is zero, so we get:

6x^{2}-30x-216=0

we can solve this by factoring, so let's factor that equation:

6(x+4)(x-9)=0

we can now set each of the factors equal to zero so we get:

x+4=0 and x-9=0

when solving each for x we get that:

x=-4 and x=9

These are our critical points, now we can build the possible intervals we are going to use to determine where the function will be increasing and where it will be decreasing:

(-∞,-4), (-4,9) and (9,∞)

so now we need to test these intervals in the derivative to see if the graph will be increasing or decreasing in the given intervals. So let's pick x=-5 for the first one, x=0 for the second one and x=10 for the third one.

When evaluating them into the first derivative we get that:

f'(-5)=84, this is a positive answer so it means that the function is increasing in the interval (-∞,--4)

f'(0)=-216, this is a negative anser so it means that the function is decreasing in the interval (-4,9)

f'(10)=84, this is a positive answer so it means that the function is increasing in the interval (9,∞)

Now, for the local extrema, we can see that at x=-4, the function it's increasing on the left of this point while it's decreasing to the right, which means that there will be a local maximum at x=-4, so the local max is the point (-4,496)

We can see that at x=9, the function it's decreasing on the left of this point while it's increasing to the right, which means that there will be a local minimum at x=-9, so the local min is the point (9,-1701)

7 0
3 years ago
Solve the equation sine Ф=0.6792 for 0°≤Ф≤360
Sergio [31]

Answer:

42.78⁹, 137.22⁹.

Step-by-step explanation:

sine Ф=0.6792

Angle Ф in the first quadrant = 42.78 degrees.

The sine is also positive in the second quadrant so the second solutio is

180 - 42.78

= 137.33 degres.

3 0
3 years ago
Can someone please help me with this the last two tutors got it wrong
9966 [12]

Triangular prism: 2 bases and 5 faces

Pentagonal prism: 2 bases and 7 faces

6 0
2 years ago
Read 2 more answers
Pls help, for 10 points!
Masteriza [31]

Answer:

I think 9 but dont quote me on it

3 0
2 years ago
Read 2 more answers
Quart cartons of milk should contain at least 32 ounces. A sample of 22 cartons was taken and amount of milk in ounces was recor
victus00 [196]

Answer:

32 oz

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • A survey finds that 40% of students ride in a car to school. Eri would like to estimate the probability that if 3 students were
    11·1 answer
  • Please help me in this question and please explain it thanks
    13·1 answer
  • Graph the linear equation find three points that solve the equation then plot on the graph 3x+2y=2
    7·2 answers
  • Help please thank you
    6·2 answers
  • In how many different ways can 3 golf clubs be selected from 6 golf clubs?
    13·2 answers
  • Write an equation in slope-intercept form, y=mx+b, for the lines with the following information:
    5·1 answer
  • Pipe leaking 1.5 cups per day how many gallons per week
    8·1 answer
  • Each loaf of pumpkin bread calls for 1 3/4 cups of raisins. About how many loaves can be made from 10 cups of raisins?
    15·2 answers
  • What’s the solution to this equation <br><br> 2x+3=x-4
    14·1 answer
  • Rewrite the equation by completing the square.<br> x^2 - 4x + 3 = 0
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!