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3 years ago

Does a quadrilateral always, sometimes or never have opposite sides

Mathematics

1 answer:

ziro4ka [17]3 years ago

4 0

Answer:

always

Step-by-step explanation:

with 4 sides you can conclude that every quadrilateral is going to have 2 pairs of opposite sides. the opposite sides might not be equal, but they will be there.

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What is (5a2 − 3a + 8) + (−4a2 − 1) + (15a + 11) expressed in its simplest form?

murzikaleks [220]

The Answer is:

(5a2-3a+8)+(-4a2-1)+(15a+11)

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3 years ago

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Is 8:12 equivalent to 10:15

kirill115 [55]

No it’s not because they don’t go into the same multiples

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4 years ago

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Suppose X and Y represent two different school populations where X > Y and X and Y must be greater than 0. Which of the follo

Stells [14]

Answer:(X+Y)²

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X²+Y² would be greater than 2(X+Y); this is because 2(X+Y) = 2X+2Y, which will be less than X²+Y², since X>Y.

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4 years ago

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At 3pm, the length of the shadow of a thin vertical pole standing on level ground is the same as the height of the pole. A while

aliya0001 [1]

Answer: The height of the pole is 175.97 ( approx )

Step-by-step explanation:

Let the height of the pole is x cm,

Also, let the angle of elevation of the sun to the pole at 3 pm is $\theta$

Thus, by the question,

$tan\theta = \frac{\text{ The height of the pole}}{\text{ The height of the shadow}}$

$\implies tan\theta = \frac{x}{x}$ ( at 3pm the height of shadow = height of the pole)

$\implies tan\theta = 1$

$\implies \theta = 45^{\circ}$

Again, according to the question,

When the angle of elevation is $(\theta - 12^{\circ})$ ,

The height of shadow = x + 95,

$\implies tan(45-12)^{\circ}=\frac{x}{x+95}$

$\implies tan 33^{\circ}=\frac{x}{x+95}$

$\implies tan 33^{\circ}x + 95\times tan33^{\circ}=x$

$\implies tan 33^{\circ}x - x = - 95\times tan33^{\circ}$

$\implies -0.3505924068 x = - 61.6937213538$

$x=175.969930202\approx 175.97\text{ cm}$

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4 years ago

Garica family bought 9 bags of cookies each bag had 15 cookies they have eaten 27 of the cookies how many cookies do they have l

vova2212 [387]

108 because 9 x 15 is 135 then 135- 27 is 108

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3 years ago