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Natasha_Volkova [10]
3 years ago
10

Lindsay needs a jewelr To repair her earrings jewelry is offering her services for an initial $125 in addition to $15 per hour j

ewelry is offering a service for initial $140 in addition to $12 per hour when will the two jewelers charge
the same amount of money
Mathematics
1 answer:
FinnZ [79.3K]3 years ago
4 0
They charge the same amount in 5 hours.
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When we graph a line using slope and y-intercept, the first point that you graph is
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Which expressions are equivalent to<br>-6 +49 + (-69) ?​
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43-69

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On 1, I need help, and for 2, is the answer right?
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5 0
3 years ago
The total resistance in a circuit with two parallel resistors is 2 ohms and R1 is 6 ohms. Using the equation for R2, in terms of
ivanzaharov [21]
<h2>Answer:</h2>

R_2  is 3 ohms

<h2>Step-by-step explanation:</h2>

In a circuit containing two resistors R_1 and R_2 connected together in parallel, the total resistance R_T is given by;

\frac{1}{R_T} = \frac{1}{R_1}  + \frac{1}{R_2}              ---------(i)

<em>Make </em>R_2<em> subject of the formula;</em>

=> \frac{1}{R_2} = \frac{1}{R_T}  - \frac{1}{R_1}  

=> \frac{1}{R_2} = \frac{R_1 - R_T}{R_TR_1}

=>   {R_2} = \frac{R_TR_1}{R_1 - R_T}       ---------------(ii)

From the question,

R_1 = 6Ω

R_T = 2Ω

Substitute these values into equation (ii) as follows;

=> {R_2} = \frac{2*6}{6 - 2}

{R_2} = \frac{12}{4}

R_2 = 3Ω

Therefore, the value of R_2 = 3 ohms or R_2 = 3Ω

3 0
3 years ago
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