3 years ago

What is the area of polygon XYZ?

Mathematics

1 answer:

Alex_Xolod [135]3 years ago

6 0

Answer:

B. 36 square units

Step-by-step explanation:

This is a triangle and to calculate the area of a triangle we multiply height with base and that divided by two

The height of this triangle is 8 units and the base is 9 units

9 × 8 ÷ 2 = 36 square units

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W=1000M-200 rearrange your make M the subject

Anton [14]

Answer:

M = $\frac{w+200}{1000}$

Step-by-step explanation:

Given

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w + 200 = 1000M ( divide both sides by 1000 )

$\frac{w+200}{1000}$ = M

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2 years ago

A boy owns 3 pairs of pants, 6 shirts, 4 ties, and 3 jackets. how many different outfits can the boy wear to school if each outf

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multiply all numbers together:

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Mike and his family drove 460 miles on their vacation. Their car averaged 23 miles per gallon of fuel. If the cost of fuel was $

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-Bee

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Exact value of cos45

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It's a value you should probably memorize:

$\cos45^\circ=\dfrac{\sqrt2}2=\dfrac1{\sqrt2}$

You can derive it using some trigonometric identities, other known values of cosine, and properties of the cosine function. For example, using the double angle identity for cosine:

$\cos^2x=\dfrac{1+\cos2x}2$

If $x=45^\circ$ , then

$\cos^245^\circ=\dfrac{1+\cos90^\circ}2$

and you probably know that $\cos90^\circ=0$ , so

$\cos^245^\circ=\dfrac12$

When we take the square root, we should take the positive root because $\cos x>0$ whenever $0^\circ$ :

$\cos45^\circ=+\sqrt{\dfrac12}\implies\cos45^\circ=\dfrac1{\sqrt2}$

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Step-by-step explanation:

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2 years ago

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