445.3 round to the nearest ten thousand

Mathematics

1 answer:

uysha [10]4 years ago

7 0

The number is not large enough to round to the 10000

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Is the equation y = -1 proportional or non proportional?

mash [69]

Answer: From my knowledge it was Non proportional but get some other answers to be sure!

5 0

3 years ago

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A source of laser light sends rays AB and AC toward two opposite walls of a hall. The light rays strike the walls at points B an

denis-greek [22]

Let $x$ be the distance from the left wall to the laser source and $y$ the distance form the right wall to the laser source.

We can use the cosine trigonometric function in the smaller triangle to relate the adjacent side of the angle and the hypotenuse; then we can solve for $x$ :
$cos( \alpha )= \frac{adjacent.side}{hypotenuse}$
$cos(60)= \frac{x}{40}$
$x=40cos(60)$
$x=20m$

We can use the tangent trigonometric function in the larger triangle to relate the opposite side of the angle and its adjacent side; then we can solve for $y$ :
$tan( \alpha )= \frac{opposite.side}{adjacent.side}$
$tan(45)= \frac{80}{y}$
$y= \frac{80}{tan(45)}$
$y=80m$

Now we can add both distances:
$20m+80m=100m$

We can conclude that <span>the distance between the walls is 100 m.</span>

8 0

4 years ago

Eights rooks are placed randomly on a chess board. What is the probability that none of the rooks can capture any of the other r

lbvjy [14]

Answer:

$4.51\times10^{-10}$

Step-by-step explanation:

There are only 2 solutions for none of the rooks can capture any of the other rooks: only if they are laid out in either of the 2 diagonal of the chess board

The number of possible combination for the rock to laid out in 8x8 (64 slots) chess board

$\frac{64 * 63 * 62 * 61 * 60 * 59 * 58 * 57}{8!} = \frac{1.78\times10^{14}}{40320} = 4426165368$ possible combination