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Sveta_85 [38]
3 years ago
5

Please help me out !

Mathematics
1 answer:
VashaNatasha [74]3 years ago
5 0

Answer:

i dont know lol but anyways

Step-by-step explanation:

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[100 POINTS] Find the values of x, y, and z.
Tom [10]

Answer:

∡x = 20°

∡y = 160°

∠z = 160°

Step-by-step explanation:

Angles on a straight line sum to 180°

⇒ ∠z + 20° = 180°

⇒ ∠z = 180° - 20°

⇒ ∠z = 160°

The central angle measure equals the corresponding arc measure.

⇒ ∡x = 20°

⇒ ∡y = ∠z = 160°

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2 years ago
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Which is the expanded form of 879?
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Answer:

800+70+9 OR 8x100+7x10+9x1

Step-by-step explanation:

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3 years ago
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Change 21/4 to a mixed number​
8090 [49]

Answer:

5\frac{1}{4}

Step-by-step explanation:

Greatest multiplier of 4 that is less than 21 is 5 (4 x 5 = 20)

Put the remaining number as the numerator (21 - 20 = 1)

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12 cm<br> 6 cm <br> What is the area of this
Ahat [919]

Answer:

If it's a rectangle, then:

12 x 6 = 72 cm²

Step-by-step explanation:

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Rationalize the denominator of 4/14 root 2?
Katarina [22]

First of all, you can simplify the 4 at the numerator and the 14 at the denominator (they're both multiple of 2):

\dfrac{4}{14\sqrt{2}} = \dfrac{2\cdot 2}{2\cdot 7\cdot\sqrt{2}} = \dfrac{2}{7\sqrt{2}}

Now, rationalize a denominator means that you have to get rid of the square root, in order to have an integer denominator.

To do so, remember that you can always multiply any number by 1 without changing its value, and you can always think of 1 as a fraction where numerator and denominator are equal:

\dfrac{2}{7\sqrt{2}} = \dfrac{2}{7\sqrt{2}}\cdot 1 = \dfrac{2}{7\sqrt{2}} \cdot \dfrac{\sqrt{2}}{\sqrt{2}} = \dfrac{2\sqrt{2}}{7\cdot 2} = \dfrac{\sqrt{2}}{7}

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3 years ago
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