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3 years ago

Solve for x.5(2x - 1) = 6

2 answers:

8 0

<span>5(2x - 1) = 6 (distribute the 5)
10x-5=6 (add 5 on both sides)
10x=11 (divide by 10 on both sides)
x=1.1

the answer is 1.1</span>

oee [108]3 years ago

5 0

Answer:

11/10

Step-by-step explanation:

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BlackZzzverrR [31]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago

If cos Θ = negative 4 over 7, what are the values of sin Θ and tan Θ? sin Θ = ±square root 33 over 7; tan Θ = ±square root 33 ov

Natali5045456 [20]

Answer:

Answer = Option A;

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tanθ = ± $\frac{\sqrt{33} }{4}$

Step-by-step explanation:

cosθ = $-\frac{4}{7}$

Remove the negative sign and evaluate cosθ = 4/7

cosθ = adjacent/hypotenuse.

Please see attached image for the right-angle triangle representation.

Let opp = length of opposite side of the triangle.

Let adj = length of adjacent side of the triangle.

Let hyp = length of hypotenuse side of the triangle

Using Pythagoras theorem,

$hyp^{2}= opp^{2} +adj^{2} ;\\\\7^{2}= opp^{2}+ 4^{2};\\ \\opp^{2} =7^{2}- 4^{2} \\\\opp^{2} = 49-16\\\\opp^{2} = 33;$

Take the square root of both sides.

$\sqrt{opp^{2} } =$ ± $\sqrt{33}$

opp = ± $\sqrt{33}$

sinθ = opposite/hypotenuse

sinθ = ± $\frac{\sqrt{33} }{7}$

tanθ = opposite/adjacent

tanθ = ± $\frac{\sqrt{33} }{4}$

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Step-by-step explanation:

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