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ella [17]
3 years ago
14

Simplify 3y – (y + 2x) + x. 2y + 3x 4y – x 2y – x 4y – 3x

Mathematics
1 answer:
mash [69]3 years ago
5 0

Use the distributive property to eliminate parentheses:

... = 3y -y -2x +x

Collect terms:

... = y(3 -1) +x(-2 +1)

... = 2y -x

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ΔABC is a 45 - 45 - 90 triangle. The pattern of its sides is as follows:

Each leg = 1 unit (and both legs are that way, since the triangle is isosceles - so two sides are the same)

Hypotenuse = √2 units.

So if we know either leg, we multiply by √2 to get the hypotenuse. In reverse, we divide by √2 if we know the hypotenuse to get the measurement of a leg.

Our problem tells us that the hypotenuse AC is 10 units. We divide 10 by √2 to get the measurement of leg AB. Since it's a 45 -45 - 90 triangle, AB = BC.

AB = \frac{10}{\sqrt{2}}

= \frac{10\sqrt{2}}{\sqrt{2}\sqrt{2}} to rationalize the radical

= \frac{10\sqrt{2}}{2} = 5\sqrt{2}

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Answer:

D

Step-by-step explanation:

An isoceles triangle has two eqial sides and angles wich give it exactly one axe of symmetry

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Step-by-step explanation:

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