3 years ago

Please answer the question 3x < 18

Mathematics

1 answer:

Ann [662]3 years ago

4 0

3x<18 I'm not sure what the rule for this problem is.

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3 years ago

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dem82 [27]

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WILL GIVE BRAINLIEST AND THANKS. find the value of x

Vika [28.1K]

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Step-by-step explanation:

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3 years ago

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lukranit [14]

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3 years ago

A scalene triangle has the lengths 6, 11, and 12. Keyla uses the law of cosines to find the measure of the largest angle. Comple

ss7ja [257]

Answer:

$Y\approx 84^\circ $(to the nearest angle)$

Step-by-step explanation:

The lengths of the sides of the scalene triangle are 6, 11, and 12.

We want to use the law of cosines to find the largest angle.

Note that the largest angle is always opposite the largest side.

Therefore:

$1. 12^2 = 11^2 + 6^2-2(11)(6)\cos(Y) \\\\2. 144 = 121 + 36-(132)\cos(Y) \\\\3. 144 = 157 - (132)\cos(Y) \\\\4. -13 = -(132)\cos(Y)\\\\\\5. \cos(Y) = \dfrac{-13}{-132} \\\\6. Y = \arccos \left ( \dfrac{13}{132}\right)\\\\7. Y=84.35^\circ\\\\8. Y\approx 84^\circ $(to the nearest angle)$

The largest angle is 84 degrees to the nearest angle.

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4 years ago