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mariarad [96]
3 years ago
7

Which is equivalent to

Mathematics
2 answers:
Kitty [74]3 years ago
8 0

Answer:

2^2 your welcome

Step-by-step explanation:

polet [3.4K]3 years ago
6 0

Answer:

C. 2^{2}

Step-by-step explanation:

  1. 2^{7} = 2 × 2 × 2 × 2 × 2 × 2 × 2 = 128
  2. 2^{5} = 2 × 2 × 2 × 2 × 2 = 32
  3. Re-write the expression with our new answers: \frac{128}{32}  
  4. 128 ÷ 32 = 4
  5. Which one of the options is equivalent to 4? A isn't because 1^{2} is equivalent to 1, not 4. B isn't because 1^{12} is equivalent to 1, not 4. C is because 2^{2} is equivalent to 2 × 2, which is 4.

I hope this helps!

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Find the minimum value of the following equation:
Mandarinka [93]

Answer:

×=11

Step-by-step explanation:

2×-4×+27-5=0

-2×+22=0

-2×=-22

×=11

8 0
2 years ago
What does y equal when the equation 4y-1=7
asambeis [7]
4y - 1 = 7    / + 1 ;
4y = 8         /÷4 ;
y = 2 ;
7 0
3 years ago
50 pts! Factor the expression over the complex numbers. x^2+52
Bas_tet [7]

x^2+52=\\\\x^2-(-52)=\\\\(x-\sqrt{-52})(x+\sqrt{-52})=\\\\(x-\sqrt{4\cdot13 \cdot(-1)})(x+\sqrt{4\cdot13\cdot(-1)})=\\\\(x-2\sqrt{13}i)(x+2\sqrt{13}i)

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3 years ago
Read 2 more answers
Solution for -4 5/6 +5 1/3
sammy [17]

Answer:

1/2

Step-by-step explanation:

to solve this equation you must find the greatest common factor or gcf to make the denominators the same

that happens to be 6

so

-4 5/6 + 5 2/6

then you add

you can break them up at add them like this

(-4 + 5) + (-5/6 + 2/6)

1 + -3/6

-3/6 is also -1/2

1 + -1/2

1/2

that is your answer

5 0
2 years ago
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A certain semiconductor device requires a tunneling probability of T = 10-5 for an electron tunneling through a rectangular barr
Goryan [66]

Answer:

Generally the barrier width is a = 1.9322 *10^{-9} \ m

Step-by-step explanation:

From the question we are told that

     The tunneling probability required is  T  = 1 * 10^{-5}

      The barrier height is  V_o  = 0.4 eV

       The electron energy is  E = 0.08eV

Generally the wave number is mathematically represented as

      k  =  \sqrt{ \frac{2 * m [V_o - E]}{\= h^2} }

Here m is the mass of the electron with the value  m  =  9.11 *10^{-31} \  kg

         h  is is know as h-bar and the value is  \= h = 1.054*10^{-34} \  J \cdot s

So

          k  =  \sqrt{ \frac{2 * 9.11 *10^{-31 } [0.4 - 0.04] * 1.6*10^{-19}}{[1.054*10^{-34}^2]} }

=>      k = 3.073582 *10^{9}  \ m^{-1}

Generally the tunneling probability is mathematically represented as

          T  = 16 * \frac{E}{V_o }  * [1 - \frac{E}{V_o} ] * e^{-2 * k * a}

So

        1.0 *10^{-5} = 16 * \frac{0.04}{0.4 }  * [1 - \frac{0.04}{0.4} ] * e^{-2 * 3.0736 *10^{9} * a}

=>    6.944*10^{-6}= e^{-2 * 3.0736 *10^{9} * a}

Taking natural log of both sides

          ln[6.944*10^{-6}] = -2 * 3.0736 *10^{9} * a}

=>        -11.8776  = -2 * 3.0736 *10^{9} * a}

=>        a = 1.9322 *10^{-9} \ m

       

4 0
3 years ago
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