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Lisa [10]
3 years ago
11

How do I do this? I’m not really sure.

Mathematics
1 answer:
kondaur [170]3 years ago
3 0

Answer:

Step-by-step explanation:

f(x) + g(x) = 3x^2 + 2x - 1 + x^2 - 3x + 1

f(x) + g(x) = 4x^2 - x

==================================

f(x) - g(x) = 3x^2 + 2x - 1 - x^2 + 3x - 1

f(x) - g(x) = 2x^2 + 5x - 2

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Find the value of $x$ that maximizes $$f(x) = \log (-20x + 12\sqrt{x}).$$ If there is no maximum value, write "NONE".
kakasveta [241]
The function is written as:
f(x) = log(-20x + 12√x)
To find the maximum value, differentiate the equation in terms of x, then equate it to zero. The solution is as follows.

The formula for differentiation would be:
d(log u)/dx = du/u ln(10)
Thus,
d/dx = (-20 + 6/√x)/(-20x + 12√x)(ln 10) = 0
-20 + 6/√x = 0
6/√x = 20
x = (6/20)² = 9/100

Thus,
f(x) =  log(-20(9/100)+ 12√(9/100)) = 0.2553

<em>The maximum value of the function is 0.2553.</em>
5 0
3 years ago
In ΔNOP, o = 3.5 inches, n = 3.3 inches and ∠N=37°. Find all possible values of ∠O, to the nearest 10th of a degree.
MrMuchimi

Answer:

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Seven Grade Math<br> Explain Why
Annette [7]

Answer:

D. 75x+160<760

Step-by-step explanation:

The reason is 75 has to be a variable because it changes with time. The fee is a fixed rate that will not change no matter the time. All of these values must be less than 760 meaning the variable and constant must be less than (<) 760

7 0
3 years ago
What composition of rigid motions maps PQR to XZY?​
Lapatulllka [165]

Answer:

Step-by-step explanation:

translated 8 units to the right and 2 units up then flipped

7 0
4 years ago
48 people attended the Sunday matinee to watch a film. .Three over 8 of the people went to see a romantic comedy. .One over six
never [62]

Answer:

22 people saw an horror movie

Step-by-step explanation:

Total people who attended the Sunday matinee = 48

People who saw romantic comedy = 3/8 of 48

= 3/8 × 48

= (3*48) / 8

= 144 / 8

= 18 people

People who saw action movie = 1/6 of 48

= 1/6 × 48

= 48/6

= 8 people

People who saw horror movie = x

Total people who attended the Sunday matinee = People who saw romantic comedy + People who saw action movie + People who saw horror movie

48 = 18 + 8 + x

48 = 26 + x

Subtract 26 from both sides

48 - 26 = 26 - 26 + x

22 = x

x = 22 people

22 people saw an horror movie

7 0
3 years ago
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