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ira [324]
3 years ago
7

A 1.5-meter snake lives in the ceiling of a college’s Chemistry Building. One day, she decides to go outside, and slithers throu

gh a pipe at the speed of 15 centimeters per second. In 90 seconds, she slithers all the way through the pipe and her whole body is outside. How long, in meters, is the pipe? Note: 1 meter = 100 centimeters Please help as soon a possible
Mathematics
1 answer:
lubasha [3.4K]3 years ago
7 0

Answer:

The~answer~for~this~question~is:135,000

Step-by-step explanation:

→ It's~quite~simple~actually.~Here~let~me~show~you:

15 × 90=1350

→ Now,~we~take~1350~and~multiply~it~with~100:

1350 × 100=135,000

Easy~isn't?~Hope~this~helped!

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A parabola has a focus of F(2, -0.5) and a directrix of y=-1.5 P(x,y) represents any point on the parabola, while D(x, -1.5) rep
prohojiy [21]
The sketch of the parabola is attached below

We have the focus (a,b) = (2, -0.5)
The point P(x,y)
The directrix, c at y=-1.5

The steps to find the equation of the parabola are as follows

Step 1
Find the distance between the focus and the point P using Pythagoras. We have two coordinates; (2, -0.5) and (x,y).
We need the vertical and horizontal distances to find the hypotenuse (the diagram is shown in the second diagram).
The distance between the focus and point P is given by
\sqrt{ (x-a)^{2}+ (y-b)^{2} }

Step 2
Find the distance between the point P to the directrix c. It is a vertical distance between y and c, expressed as y-c

Step 3
The equation of parabola is then given as 
\sqrt{ (x-a)^{2}+ (y-b)^{2} }=y-c
(x-a)^{2}+ (y-b)^{2}= (y-c)^{2} ⇒ substituting a, b and c
(x-2)^{2}+ (y--0.5)^{2}  = (y--1.5)^{2}
(x-2)^{2}+ (y+0.5)^{2}= (y+1.5)^{2}⇒Rearranging and making y the subject gives

y= \frac{ x^{2} }{2} -2x+1

7 0
4 years ago
Tony has a bucket filled with green, blue, yellow, and red markers. He removes 3 markers from the bucket, with replacement. Sele
Margaret [11]

Answer:

Options A), B), C), D)

Step-by-step explanation:

There are 4 colors of markers.

Take out three "with replacement" markers.

As there is replacement, then the number of markers in the cube does not change in each trial.

A) There is a chance that when you get the three markers always get the same color.

B) It is likely to get a marker of each color

C) If 3 markers are taken it is likely to get the same amount of green and blue markers. For example, if there are 3 markers obtainable: blue, green, yellow. Then the number of blues and yellows is the same.

D) If 3 markers are taken it is likely to obtain the same amount of red and yellow markers. For example, if there are 3 markers you could obtain: red, yellow, blue. Then the number of reds and yellows is the same.

E) <u><em>It is impossible for this to happen</em></u>, because if only 3 markers of two different colors are taken, then there will always be 2 markers of one color and only one marker of another color:

green, green, yellow

blue, blue, green

blue, red, red .....

So the first 4 results are possible. Only the last result is impossible to obtain

5 0
3 years ago
Which of the following is not the same as 5.63 grams? A) 0.563 hg B) 5,630 mg C) 0.00563 hg
Alex787 [66]
<span>B) 5,630
hope it helps
</span>
6 0
3 years ago
Please answer correctly
9966 [12]

Answer:

c

Step-by-step explanation:

6 0
3 years ago
Seth earns 152 in 4 days. At that rate how many days will it take him to earn 532
djverab [1.8K]
Please use $ signs when discussing US currency.  

<span>$152 in 4 days. At that rate how many days will it take him to earn $532

One way to solve this is to set up and solve an equation of ratios:

 $152         $532
---------- = ---------
4 days           x
                                                2128
Then 152x = 4(532), and  x = ---------- = 14.  It'll take Seth 14 days to earn                                                                             $532.
                                                  152</span>
3 0
3 years ago
Read 2 more answers
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