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Svet_ta [14]
4 years ago
5

An equation is shown below: 1 over 2 multiplied by x plus 3 over 2 equals 2 to the power of x What is the solution to the equati

on? x = 1 x = 2 x = 4 x = 8
Mathematics
2 answers:
Leto [7]4 years ago
7 0

Answer:

x = 1

Step-by-step explanation:

1/2 x 1 = 1/2

1/2 + 3/2 = 4/2 = 2

2 to the power of 1 is 2

Alborosie4 years ago
3 0

Answer:

First option is correct. The solution of the equation is x=1.

Step-by-step explanation:

The given equation is

\frac{1}{2}x+\frac{3}{2}=2^x

The value of x, which satisfy the above equation is the solution of the given equation.

Put x=1 in the given equation.

\frac{1}{2}(1)+\frac{3}{2}=2^{1}

\frac{1+3}{2}=2

\frac{4}{2}=2

2=2

Since left hand side is equal to right side, therefore first option is correct.

Put x=2 in the given equation.

\frac{1}{2}(2)+\frac{3}{2}=2^{2}

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

\frac{5}{2}=4

Since left hand side is not equal to right side, therefore second option is correct.

Put x=4 in the given equation.

\frac{1}{2}(4)+\frac{3}{2}=2^{4}

\frac{4+3}{2}=16

\frac{7}{2}=16

Since left hand side is not equal to right side, therefore third option is correct.

Put x=8 in the given equation.

\frac{1}{2}(8)+\frac{3}{2}=2^{8}

\frac{8+3}{2}=256

\frac{11}{2}=256

Since left hand side is not equal to right side, therefore fourth option is correct.

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Answer:

Toner = $45.00; ink = $25.50

Step-by-step explanation:

Let T = the cost of a toner cartridge and I = the cost of an ink cartridge

We have two conditions:

(1)                      T = I + 19.50

(2)           4T + 11I = 460.50     Substitute (1) into (2)

4(I + 19.50) + 11I = 460.50     Remove parentheses

 4I + 78.00 + 11I = 460.50     Combine like terms

      15 I + 78.00 = 460.50     Subtract 78.00 from each side

                    15I = 382.50      Divide each side by 15

(3)                  I = 25.50

=====

Substitute (3) into (1)

T = 25.50 + 19.50

T = 45.00

=====

<em>Check: </em>

(1)                         45.00 = 25.50 + 19.50

                           45.00 = 45.00

(2) 4×45.00 + 11×25.50 = 460.50

         180.00 + 280.50 = 460.50

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Step-by-step explanation:

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Answer:

t = ln(0.5)/-r

Step-by-step explanation:

The decay rate parameter is missing. I will assume a value of 4% per day.

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