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Mathematics

1 answer:

masya89 [10]3 years ago

7 0

Because of the area

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Jan's pencil is 8.5 cm long. Ted's pencil is longer. type a demical that could represent the length of ted's pencil

cluponka [151]

If Jan's pencil is 8.5 cm long, and Ted's is longer, anything larger than 8.5 should work.

Examples - 8.9 c.m.
9.6 c.m.

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3 years ago

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In a game the player wins if he rolls a 6 on a number cube. If the number cube is rolled 18 times, then what is a reasonable pre

Mamont248 [21]

On a cube, you have 6 faces, therefore you have 1 chance to get 6 and 5 chances not to get 6.

Therefore, the overall probability not to get 6 is 5/6 = 0.8333

If you roll the cube 18 times, the prediction of unsuccessful rolls will be:
18 × 0.8333 = 15

Therefore, you expect to have 15 unsuccessful rolls over 18 total rolls.

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3 years ago

What is the equation of the line of the best fit for the following data? Round to the slope and y-intercept of the line to three

BigorU [14]

Answer:

D. $y=-0.927x+13.634$

Step-by-step explanation:

We graph the points on the graph. The graph is attached.

Let us take two points (1, 14) and (15, 1), and calculate the slope $m$ between them <em>(we choose these points because the line passing through them will be the best fit for all points) </em>

$m=\frac{14-1}{1-15} =\frac{13}{-14} =-0.9286$

Thus we have the equation

$y=-0.9286x+b$

Let us now calculate $b$ from the point $(1,14)$

$14=-0.9286(1)+b$

$b=14.9286$

So the equation we get is

$y=-0.9286x+14.9286$

Let us now turn to the choices given and see which choice is closest to our equation: we see that choice D. $y=-0.927x+13.634$ is the closest one, so we pick it.