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Solnce55 [7]
3 years ago
10

Help this is really hard

Mathematics
2 answers:
Agata [3.3K]3 years ago
5 0

(2^8 *3^-5* 6^0)^-2 * ((3^-2)/(2^3))^4 * 2^28

anything to the 0 power is 1

(2^8 *3^-5* 1)^-2 * ((3^-2)/(2^3))^4 * 2^28

using the power of power property to take the power inside

(2^(8*-2) *3^(-5* -2) * (3^-2*4)/(2^3*4) * 2^28

simplify

2^ -16 * 3^10 * 3^-8 /2*12   * 2^28

get rid of the division by making the exponent negative

2^-16 * 3^10 * 3^-8 *2*-12   * 2^28

combine exponents with like bases

2^(-16-12+28) * 3^(10-8)

2^(0) *3^2

anything to the 0 power is 1

1*9

9




Nata [24]3 years ago
3 0

(2^8\cdot3^{-5}\cdot6^0)^{-2}\cdot\left(\dfrac{3^{-2}}{2^3}\right)^4\cdot2^{28}\\\\\text{use}\\(a\cdot b)^n=a^n\cdot b^n\\(a^n)^m=a^{nm}\\\left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\\ a^0=1\ for\ a\neq0\\\\=(2^8)^{-2}\cdot(3^{-5})^{-2}\cdot1^{-2}\cdot\dfrac{(3^{-2})^4}{(2^3)^4}\cdot2^{28}=2^{(8)(-2)}\cdot3^{(-5)(-2)}\cdot1\cdot\dfrac{3^{(-2)(4)}}{2^{(3)(4)}}\cdot2^{28}

=2^{-16}\cdot3^{10}\cdot\dfrac{3^{-8}}{2^{12}}\cdot2^{28}=\dfrac{2^{-16}\cdot2^{28}}{2^{12}}\cdot3^{10}\cdot3^{-8}\\\\\text{use}\ a^n\cdot a^m=a^{nm}\\\\=\dfrac{2^{-16+28}}{2^{12}}\cdot3^{10+(-8)}=\dfrac{2^{12}}{2^{12}}\cdot3^2=1\cdot3^2=3^2=9\\\\Answer:\ \boxed{9}

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Answer this equation: 4 3/5 - -3 2/5 + 3
horrorfan [7]

Answer:

24

Step-by-step explanation:

4\frac{3}{5} -(-3\frac{2}{5})+3

Negative and another negative makes a positive.

4\frac{3}{5}+3\frac{2}{5}+3

Add the fractions first.

7\frac{5}{5}+3

5/5 is equivalent to 1. 7 5/5 becomes 8.

8+3

Add the numbers.

24

I hope this helps!

6 0
3 years ago
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At a restaurant jars of tomato sauce are stored in boxes in the pantry. Each box contains 8 jars of tomato sauce. A cook uses 2
defon

Answer:

y = 8x − 2

Step-by-step explanation:

x =the number of boxes

Total jars of tomato sauce is each box contains 8 jars so that is 8 x x=8x

2 jars were removed making it 8x-2

y will be 8x-2

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Why is the number 19/100 a rational number?
Kobotan [32]

Answer:

  B. It is the quotient of 19 divided by 100

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5 0
3 years ago
1. The producer of the news station posted an article about the high school’s football championship ceremony on a new website. T
Alex

Answer:

1.

hours / views

1. / 125

2. / 250

3. / 375

4. / 500

5. / 625

2.

f(x)= 125 x views=125.hours

The slope of the function equals the visits of each hour.

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4 0
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A given field mouse population satisfies the differential equation dp dt = 0.5p − 410 where p is the number of mice and t is the
ohaa [14]

Answer:

a) t = 2 *ln(\frac{82}{5}) =5.595

b) t = 2 *ln(-\frac{820}{p_0 -820})

c) p_0 = 820-\frac{820}{e^6}

Step-by-step explanation:

For this case we have the following differential equation:

\frac{dp}{dt}=\frac{1}{2} (p-820)

And if we rewrite the expression we got:

\frac{dp}{p-820}= \frac{1}{2} dt

If we integrate both sides we have:

ln|P-820|= \frac{1}{2}t +c

Using exponential on both sides we got:

P= 820 + P_o e^{1/2t}

Part a

For this case we know that p(0) = 770 so we have this:

770 = 820 + P_o e^0

P_o = -50

So then our model would be given by:

P(t) = -50e^{1/2t} +820

And if we want to find at which time the population would be extinct we have:

0=-50 e^{1/2 t} +820

\frac{820}{50} = e^{1/2 t}

Using natural log on both sides we got:

ln(\frac{82}{5}) = \frac{1}{2}t

And solving for t we got:

t = 2 *ln(\frac{82}{5}) =5.595

Part b

For this case we know that p(0) = p0 so we have this:

p_0 = 820 + P_o e^0

P_o = p_0 -820

So then our model would be given by:

P(t) = (p_o -820)e^{1/2t} +820

And if we want to find at which time the population would be extinct we have:

0=(p_o -820)e^{1/2 t} +820

-\frac{820}{p_0 -820} = e^{1/2 t}

Using natural log on both sides we got:

ln(-\frac{820}{p_0 -820}) = \frac{1}{2}t

And solving for t we got:

t = 2 *ln(-\frac{820}{p_0 -820})

Part c

For this case we want to find the initial population if we know that the population become extinct in 1 year = 12 months. Using the equation founded on part b we got:

12 = 2 *ln(\frac{820}{820-p_0})

6 = ln (\frac{820}{820-p_0})

Using exponentials we got:

e^6 = \frac{820}{820-p_0}

(820-p_0) e^6 = 820

820-p_0 = \frac{820}{e^6}

p_0 = 820-\frac{820}{e^6}

8 0
3 years ago
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