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crimeas [40]
3 years ago
9

3c^2+56=-135 what is the solution​

Mathematics
1 answer:
WINSTONCH [101]3 years ago
8 0

3 {c}^{2}  + 56 =  - 136 \\ \Leftrightarrow 3 {c}^{2}  =  - 192 \\ \Leftrightarrow  {c}^{2}  =  - 64 \\ \Leftrightarrow c = \pm8i

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Viefleur [7K]

Option A:

The simplest radical form of x is 3\sqrt{15}.

Solution:

Hypotenuse = 16 in

Two sides are 11 in and x.

To find the value of x:

Pythagoras theorem:

In a right angle triangle, the hypotenuse is equal to the sum of the other two sides.

11^2+x^2=16^2

121+x^2=256

Subtract 121 from both sides of the equation.

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\sqrt {x^2}=\sqrt {135}

x=3\sqrt {15}

Hence option A is the correct answer.

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