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2 years ago

Find x...............................

Mathematics

2 answers:

Stolb23 [73]2 years ago

8 0

X=1

im sorry.. im not entirely sure but i just cross-multiplied so x/45 = 2/90 and so yeah I got 1

notsponge [240]2 years ago

6 0

Answer:

sqrt(2) =x

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin theta = opp/ hyp

sin 45 = x/2

2 sin 45 =x

2 ( sqrt(2)/2) =x

sqrt(2) =x

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3 years ago

Solve the equation 6w2 – 7w – 20 = 0.

azamat

For this case we have the following quadratic equation:

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Where:

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Its roots will be given by:

$w = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2 (a)}\\w = \frac {- (- 7) \pm \sqrt {(- 7) ^ 2-4 (6) (- 20)}} {2 (6)}\\w = \frac {7 \pm \sqrt {49 + 480}} {12}\\w = \frac {7 \pm \sqrt {529}} {12}\\w = \frac {7 \pm23} {12}$

The roots are:

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3 years ago

Read 2 more answers

F(x) = 3x2 - 11 Find f(-5)

Over [174]

F(x)=3x2-11
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5f=-5
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3 years ago