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
o-na [289]
3 years ago
13

What is the maximum value of f(x)=−4x2+4x−2?

Mathematics
1 answer:
horrorfan [7]3 years ago
5 0

Answer: -1

Step-by-step explanation: A typical quadratic equation is ax^{2} +bx+c and the maximum value formula is -b/2a, so let plug it in -4/2(-4) which equals 1/2. Then let plug 1/2 into the equation,

-4(1/2)^2+4(1/2)-2=

    -1+2-2=

          -1

You might be interested in
ms Callahan is building a new dog pen for her dog. she has 24feet of fencing. the pen needs to be a rectangle. what is the lengt
NeX [460]
If Ms. Callahan has 24 feet of fencing, and she is building a pen, the PERIMETER of the pen must be 24 feet.  The perimeter is basically the distance around a figure.  The perimeter of a rectangle is equal to length plus width plus length plus width, AKA l+w+l+w, or P=2l+2w.  In a rectangle, two pairs of sides are of equal length--so the two lengths and the two widths must be equal.

So, the formula is P=2l+2w.  P, the perimeter, is 24, so 24=2l+2w.  Let's try some values for l and see what we get for w.  If the length is 1, l=1.  24=(2*1)+2w.  24=2+2w.  22=2w.  w=11.  So if length is 1 foot, width is 11 feet.

What if l=2?  24=(2*2)+2w.  24=4+2w.  2w=20.  w=10.  If l=2, w=10.  And l=3?  24=(2*3)+2w.  24=6+2w.  18=2w.  w=9.  If l=3, w=9.  Do you see a pattern?  Every time we add 1 to l, we subtract 1 from w.  So if l=4, w=8.  If l=5, w=7.  If l=6, w=6.  Here, we start getting similar answers: if l=7, w=5.  If l=8, w=4.  Since we already know these values work, it doesn't matter whether we call it length or width.  So, our answers are below.

Answer: Ms Callahan can make a pen with a length of 1 foot and a width of 11 feet, a length of 2 feet and a width of 10 feet, a length of 3 feet and a width of 9 feet, a length of 4 feet and a width of 8 feet, a length of 5 feet and a width of 7 feet, or a length of 6 feet and a width of 6 feet.
6 0
3 years ago
90 degrees to radian
insens350 [35]

To convert degrees to radians  multiply degrees by pi/180.

So 90 degrees = 90pi/180  = pi/2 radians   or  1.57 radians to the nearest hundredth.

7 0
3 years ago
Rachael is placing a protective cover on a glass case. The case is a cube, and the perimeter of one cube face is 56 inches.
Dmitry_Shevchenko [17]

Answer:

336

Step-by-step explanation:

We know that a cube has 6 faces which means we can use this equation:

56 x 6 = 336

336 square inches is the answer.

5 0
2 years ago
Read 2 more answers
The volume of a box can be found by multiplying the length times width times height of a box (v=lwh). If the volume of a box is
Andrej [43]

Answer:

  about 10.924 inches

Step-by-step explanation:

If all of the dimensions are equal, the box is a cube. Its side length is the cube root of the volume.

  V = s³

  s = ∛V = ∛1300 ≈ 10.913929 . . . . inches

8 0
3 years ago
Read 2 more answers
Find the measure of the angle.
vesna_86 [32]
It will be 4 16 because it a circle on square timing 94 Fahrenheit
5 0
2 years ago
Other questions:
  • How much is 3 3/5 x 2 3/8
    8·1 answer
  • A train is travelling from new orleans at a constant speed of 79 hours per hour. New Orleans and memphis are miles apart. How lo
    10·1 answer
  • Evaluate the expression.<br> 33 + 3(4 + 1/2)
    12·1 answer
  • mr tan buys 4 white pine trees and 5 birch trees what is the vost of the trees show your work and explain how you found answer n
    13·1 answer
  • Transtutors the town barber shop can accommodate 35 customers per day. the manager has determined that if two additional barbers
    15·1 answer
  • What is 35% of 280?
    13·2 answers
  • A car can travel 264 miles on 11 gallons of gasoline. How far can it travel on 2<br> gallons?
    10·2 answers
  • Hi could some one please HELP me !!!
    14·2 answers
  • Complete the Area Model by dragging responses to the correct location.
    9·1 answer
  • Will give brainliest to whoever answers this question please help
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!