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3 years ago

What is the measure of the missing interior angle?

Mathematics

2 answers:

Margarita [4]3 years ago

6 0

Answer:

Step-by-step explanation:

There is a right angle which is 90 degrees. 65+90=155.

A triangle has a total of 180 degrees angles

180-155=25.

The missing angle is 25 degrees

gregori [183]3 years ago

6 0

The answer to the problem is 25

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3 years ago

Solve the equation using the quadratic formula. Enter each solution in simplest form.

sergeinik [125]

For this case we have the following quadratic equation:

$x ^ 2-4x + 23 = 0$

The solutions will be given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

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$x = \frac {- (- 4) \pm \sqrt {(- 4) ^ 2-4 (1) (23)}} {2 (1)}\\x = \frac {4 \pm \sqrt {16-92}} {2}\\x = \frac {4 \pm \sqrt {-76}} {2}\\x = \frac {4 \pm \sqrt {76i ^ 2}} {2}\\x = \frac {4 \pmi \sqrt {76}} {2}\\x = \frac {4 \pmi \sqrt {2 ^ 2 * 19}} {2}\\x = \frac {4 \pm2i \sqrt {19}} {2}\\x = 2 \pm i\sqrt {19}$

We have two roots:

$x_ {1} = 2-i \sqrt {19}\\x_ {2} = 2 + i \sqrt {19}$

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4 years ago

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Answer:

Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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2 years ago