A bee lands on a random point on a ruler edge. find the probability that the point is between 3 and 5.

2 answers:

6 0

It would be 1/4 because there are 12 inches on a ruler. And if it lands between 3 and 5 there are 3 chances out of 12 that it will land between 3 and 5. 3/12 simplifies to 1/4

Nuetrik [128]3 years ago

3 0

Answer: the correct answer was 1/6. I just got it right.

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A rectangle has an area of x square units. The rectangle is dilated to create a new rectangle with an area of 9x square units. D

Alika [10]

The reactangle has an area of x.

So that means two numbers multiplied to each other equal to x. We can just think of itwo numbers that when multiplied equal to x as a and b.

So that means the side lengths are <u />a and b. And ab = x (will be using this right next).

And it was multiplied by some scale factor that made the new area 9x. So if the scale factor is y, then:

$(y\times a)\times (y\times b)=9x$
$y^2ab=9x$
$y^2x=9x$
$y=3$

y can not equal to -3, because the length of a side of any polygon can never be negative.

So the dilation is 3.

And so if the dimension is 5 by 8.

Then the area is $5 \times 8=40$

And so then $x=40$

And then after the dilation, it would be $9x=9(40) = 360$

We could check it another way too. Since we said the scale factor is 3, then:

$( 5 \times 3) \times (8 \times 3) = 15 \times 24 = 360$

So basically 15 by 24 is the new dimensions :)

6 0

3 years ago

The weight of people in a small town in missouri is known to be normally distributed with a mean of 154 pounds and a standard de

ad-work [718]

If a random sample of 20 persons weighed 3,460, the sample mean x-bar would be 3460/20 = 173 pounds.
The z-score for 173 pounds is given by:
$z=\frac{173-154}{29}=0.655$
Referring to a standard normal distribution table, and using z = 0.66, we find:
$P(\bar x\ \textless \ 173)=0.7454$
Therefore
$P(\bar x\ \textgreater \ 173)=1-0.7454=0.2546$
The answer is: 0.2546

4 0

4 years ago

Please help me. This is due tomorrow

IRISSAK [1]

The picture is upside down my dude, delete the question, re-upload it and ill help you out.

3 0

3 years ago

Read 2 more answers

Can someone please explain this to me???

Softa [21]

If it costs $60 for 200 minutes you can do $60 divided by 200 to find how much money it costs per minute which equals .3 or 3 cents a minute. so if you have 1272 minutes you can multiply that by .3 and it equals $381.60

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4 years ago

Heeeeeelp 5). A sector of a circle with the centre angle 120° is

Stella [2.4K]

Answer:

i forgo

Step-by-step explanation:

5 0

3 years ago