3 years ago

Can somebody help? Asap

Mathematics

1 answer:

melomori [17]3 years ago

3 0

The answer is 15.
9 x 15 =135 + 8= 143
143+37 =180 degrees

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3 years ago

Solve (x – 3)2 = 49. Select the values of x. –46 -4 10 52

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3 0

3 years ago

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sweet [91]

Answer:

$d=10$

Step-by-step explanation:

Pythagorean theorem:

$d^2+d^2=10\sqrt{2}^2,\\2d^2=200,\\d^2=100,\\d=\boxed{10}$

Alternative:

$\cos 45^{\circ}=\frac{d}{10\sqrt{2}},\\\frac{\sqrt{2}}{2}=\frac{d}{10\sqrt{2}},\\2d=10\sqrt{2}\cdot \sqrt{2},\\2d=20,\\d=\boxed{10}$

Alternative (derived from the Pythagorean theorem):

All 45-45-90 triangles have side lengths $x-x-x\sqrt{2}$ , where $x\sqrt{2}$ is the hypotenuse. Since this triangle's hypotenuse is $10\sqrt{2}$ , its sides are $10-10-10\sqrt{2}$ .

3 0

3 years ago

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