3 years ago

Sandra runs at a rate of 8 miles in 45 minutes how does her unit rate compared to terrance's and jessie's

Mathematics

1 answer:

alekssr [168]3 years ago

7 0

We can't do this one because we don't know terrance's and jessie's unit rate

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Solve and graph x - 2 > -5 and x - 2 < 4 on a number line

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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

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4. Marcella has 4 fewer male cousins than female cousins. Let f represent the number of female cousins. Write an expression for

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F - 4 = number of boy cousins.

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$\frac{28.4}{0.05}$

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