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3 years ago

In triangle XYZ, m∠Z > m∠X + m∠Y. Which must be true about △XYZ?

Mathematics

2 answers:

Mnenie [13.5K]3 years ago

8 0

Answer:

(D) m∠X+m∠Y∠90°

Step-by-step explanation:

padilas [110]3 years ago

6 0

The statement that must be true for the given condition is <span>m∠X + m∠Y < 90°</span>

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Convert the rectangular coordinates (-9, 3V3) into polar form. Express the angle

Whitepunk [10]

Answer:

$(6\sqrt{3},\,\frac{5\pi}{6})$

Step-by-step explanation:

The radius r can be found from the relationship

$r^2=x^2+y^2\\r^2=(-9)^2+(3\sqrt{3})^2\\r^2=81+27=108\\r=\sqrt{108}\\r=6\sqrt{3}$

The point is in Quadrant II (-, +), so use the inverse cosine function to find the angle.

$\cos{\theta}=\frac{x}{r}=\frac{-9}{6\sqrt{3}}\\\cos{\theta}=-\frac{9}{6\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}}\\\cos{\theta}=-\frac{9\sqrt{3}}{6\cdot3}\\\cos{\theta}=-\frac{\sqrt{3}}{2}\\\\\cos^{-1}\frac{-\sqrt{3}}{2}}=\frac{5\pi}{6}$

See the attached image.

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3 years ago

PLEASE HELP I NEED TO PASS THIS CLASSS!!!!!!!!!!

Nuetrik [128]

Answer:

1, 2, 4

Step-by-step explanation:

The triangles are similar by AAA or SSS (yes)

The sides are proportional (yes)

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3 years ago

1 r 2 (the symbol is pi) is the formula to find the area of a

vaieri [72.5K]

Answer:

d: circle

Step-by-step explanation:

The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter.

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Numbers that are greater than 5 and less than 5.75

Goshia [24]

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3 years ago

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John lost 1.44 kilograms after a week of exercise. One kilogram is equal to approximately 2.2 pounds. How many pounds did John l

uranmaximum [27]

Answer:

Step-by-step explanation:

1.44x2.2=3.168 pounds

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3 years ago