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Nady [450]
3 years ago
8

PLEASE HELP I WILL MARK BRAINLY

Mathematics
1 answer:
Delicious77 [7]3 years ago
6 0

Answer:

a only

Step-by-step explanation:

its a negative change b is a positive and there is no "a and c" choice listed

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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
Halp me again plez . . . . . . . . . . .
Katena32 [7]

Answer:

B?

good luckkkkkkkkkkkk

6 0
3 years ago
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The normal gasoline mileage of a car is 48 mpg. On a smooth road, the cars mileage is 12% higher. What is its mileage on a smoot
anyanavicka [17]
53.76 MILES IS THE ANSWER. hOPE IT HELPS
6 0
4 years ago
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2x - 5y = 4<br> 3x - 7y = 5
VMariaS [17]

Answer:

(-3,-2)

Step-by-step explanation:

2x-5y=4

3x-7y=5

solve the equation

x=2+5/2y

3x-7y=5

substitute the value of x into an equation

3(2+5/2y)-7y=5

multiply 3 to 2. and. 3 to 5/2y

6+15/2y-7y=5

minus 6 to 5 and. add 15/2y to -7y

-1/2y=1

divide both sides by -1/2

y= -2

substitute the value of -2 into an equation

x=2+5/2•(-2)

multiply 5/2 to -2

x=2+-5

add but since 5 is negative then subtract the numbers

x= -3

combine y= -2 and x= -3 as a point

So the answer is (-3,-2)

3 0
3 years ago
The balcony of an apartment is 4 feet by 7 feet. On a scale drawing of the apartment, the balcony is 0.8 inch by 1.4 inches, and
myrzilka [38]

Answer:

12 by 14 ft.

Step-by-step explanation:

Multiply the scale drawing's dimensions by 5. (Feet)

6 0
3 years ago
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