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3 years ago

20. Jane and Richard each painted about 1/5

Mathematics

1 answer:

Tatiana [17]3 years ago

3 0

Answer:

I can't draw a picture but its possible cuz they painted ABOUT 1/5 of the bird house so Jane could have painted a bit more than 1/5 but it would still be about 1/5

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What is the value of x?

GenaCL600 [577]

Answer:

Step-by-step explanation:

Look at the picture.

We have the triangles 45° - 45° - 90° and 30° - 60° - 90°.

The sides of those triangles are in ratio:

1 : 1 : √2 and 1 : √3 : 2

Therefore

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3 years ago

Complete the identity

spin [16.1K]

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Step-by-step explanation:

We need to apply the following identity:

$cos(A - B) = cos A*cos B + sinA*sin B$

Then, applying this, you know that for $cos(\pi-x)$ :

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We need to remember that:

$cos(\pi)=-1$ and $sin(\pi)=0$

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Then, you get:

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3 years ago

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abruzzese [7]

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Andrew [12]

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= - 3x⁸ + 7x⁴ + 2x²

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2 years ago

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Dmitry_Shevchenko [17]

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