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grin007 [14]
3 years ago
13

What is the average rate of change of the function f(x)=20(14)xf(x)=20(14)x from x = 1 to x = 2? Enter your answer, as a decimal

, in the box.
Mathematics
1 answer:
Advocard [28]3 years ago
6 0
The average rate of a function f(x) over an interval x = a and x = b is given by:

Average \ Rate \ of \ Change= \frac{f(b)-f(a)}{b-a}

Given the function

f(x)=20(14)^x

The average rate of change from x = 1 to x = 2 is given by:

\frac{f(2)-f(1)}{2-1} = \frac{20(14)^2-20(14)^1}{1}  \\  \\ =20(196-14)=20(182)=3,640
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A chemist mixes 4 liters of one acid solution with 10 liters of a 40% solution, resulting in a 30% acid solution. The table show
kondaur [170]

Given that amount of first acid solution = 4 liters

Let concentration of the first acid solution = x

then effective amount of first solution = 4x


Given that amount of second  acid solution = 10 liters

Givn that concentration of the second acid solution = 40% = 0.4

then effective amount of second solution = 0.4(10)


Then amount of resulting acid solution = (4+10) liters

Givn that concentration of the resulting acid solution = 30% = 0.3

then effective amount of resulting solution = 0.3(4+10)


Combining all those results gives equation

4x +0.4(10) = 0.3(4+10)

4x +4 = 0.3(14)

4x +4 = 4.2

4x = 0.2

x=0.05


Hence final answer is 0.05 or you can say 5%.



6 0
3 years ago
Read 2 more answers
A rectangular box with a square base is to be constructed from material that costs $9 per ft2 for the bottom, $4 per ft2 for the
mafiozo [28]

Answer:

V = 23.85 ft³

Step-by-step explanation:

The dimension of the square base = x ft by x ft

Height of box = y

Volume of the box, V = x^{2} y

Cost of top = $4 * x^{2}

Cost of the bottom =  $9 * x^{2}

Cost of the sides = $3 * 4xy

Total cost = 4x² + 9x² + 12xy

Total cost = 13x² + 12xy

Total cost = $193

193 = 13x² + 12xy

y = \frac{193 - 13x^{2} }{12x}

But volume, V = x²y

V = \frac{x^{2} (193 - 13x^{2}) }{12x}

V = \frac{x (193 - 13x^{2}) }{12}...................(1)

At maximum value, V' = 0

0 = \frac{193 - 39x^{2} }{12}

39x^{2}  = 193\\x^{2} = \frac{193}{39}

x = 2.23

Put the value of x into (1)

V = \frac{2.23 (193 - 13*2.23^{2}) }{12}

V = 23.85 ft³

6 0
3 years ago
(-3)^3 please answer
bagirrra123 [75]

Answer:

-27

Step-by-step explanation:

-3*-3=9 and then 9*-3 = -27

6 0
3 years ago
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What is the volume of a sphere that has a 64 m radius
Molodets [167]

Answer:

V=349525.333*pi

Step-by-step explanation:

Volume of a sphere: V=(4/3)*pi*r^3 where r=radius.

r=64

V=(4/3)*pi*(64)^3=(4/3)(262144)pi=349525.333*pi

8 0
3 years ago
What is the perimeter of the given figure?
NISA [10]

Answer:

D.

Step-by-step explanation:

The length of the unmarked side of the triangle is found by using Pythagoras:

x sqrt (10^2 - 6^2)

= sqrt 64

= 8.

The length of the curved part = 1/2 * pi * 10 = 5pi

Perimeter = 8 + 6 + 5pi

= 14 + 5pi

8 0
3 years ago
Read 2 more answers
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