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nevsk [136]
3 years ago
8

Angle RST is a right angle. If line RS has a slope of 3, what must be the slope of line ST?

Mathematics
1 answer:
Arisa [49]3 years ago
5 0
Because RS is perpendicular to ST so the slope of line ST is -\frac{1}{3}
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Answer:

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What value of x satisfies
LenaWriter [7]

Answer:

See explanation

Step-by-step explanation:

The given trigonometric equation is cos(90-x)=-\frac{\sqrt{3} }{3}.

We take the inverse cosine of both sides to get:

90-x=cos^{-1}(-\frac{\sqrt{3} }{3})

90-x=125

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x=-35\degree=325\degree to the nearest degree

None of the options satisfies the given equation.

But if the question is actually;

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Then;

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3 years ago
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Step-by-step explanation:

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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}  

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From the question,

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

R_2 = 3Ω

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

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