3 years ago

Please help! I tried 1/4 and its wrong.

Mathematics

2 answers:

VikaD [51]3 years ago

7 0

Answer:

1/16

Step-by-step explanation:

jolli1 [7]3 years ago

4 0

Ok so on the first draw, 6/24 marbles are likely to be blue so there is 1/4 chance of obtaining blue originally. But, she puts it back and again it's 1/4 of obtaining the blue again. So 1/4 X1/4 = 1/16.

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spin [16.1K]

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3 years ago

The braking distance Dv (in meters) for a certain car moving at velocity v (in meters/second) is given by =Dvv234.

MaRussiya [10]

Answer:

S(t)= $\frac{9t^2}{34}$

Step-by-step explanation:

We are given that

Th braking distance for a certain car moving at velocity v(in m/s) is given by

$D(v)=\frac{v^2}{34}$

The velocity of car B(t) t seconds after starting = $B(t)=3t$

We have to find the value for braking distance S(t) after t seconds.

To find the formula for braking distance we will substitute the value of velocity B(t) in place of v in D(v)

Substitute the value of velocity then we get

Then, we get

The formula for the braking distance S(t) after t seconds= $\frac{(3t)^2}{34}$

The formula for the braking distance S(t) after t seconds= $\frac{9t^2}{34}$

8 0

3 years ago

You drop a rock off a bridge. The rock’s height, h (in feet above the water), after t seconds is modeled by h = -16t^2 + 541. Wh

maks197457 [2]

For this case we have the following equation:
$h = -16t ^ 2 + 541
$
To answer the question, what we must do is evaluate the function for t = 2.
We have then:
$h = -16 (2) ^ 2 + 541
$
Rewriting we have:
$h = -16 (4) + 541

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Answer:
The height of the rock after 2 seconds is:
$h = 477 feet$

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