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mr_godi [17]
1 year ago
11

Three friends are buying seashells at the gift shop on the beach. Melanie buys 2 seashells for​ $0.80. Rosi buys 5 seashells for

​ $2.00. Carlos buys 4 seashells for​ $1.60. Use a graph to determine whether the number of seashells and the cost have a proportional relationship. If​ so, what is the constant of proportionality and what does it​ mean?
Mathematics
1 answer:
bulgar [2K]1 year ago
6 0

Answer:

Step-by-step explanation:

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How many extraneous solutions does the equation below have? StartFraction 2 m Over 2 m + 3 EndFraction minus StartFraction 2 m O
xeze [42]

Answer:

0

Step-by-step explanation:

We have the fraction \frac{2m}{2m+3} -\frac{2m}{2m-3}

Step 1. Use LCM of the fraction, (2m+3)(2m-3), to simplify the fraction:

\frac{(2m-3)(2m)-(2m+3)(2m)}{(2m+3)(2m-3)} =\frac{2m^2-6m-[2m^2+6m]}{(2m+3)(2m-3)} =\frac{2m^2-6m-2m^2-6m}{(2m+3)(2m-3)} =\frac{-12m}{(2m+3)(2m-3)}

Step 2. Equate the resulting fraction to zero and solve for m:

\frac{-12m}{(2m+3)(2m-3)} =0

-12m=0[(2m+3)(2m-3)]

-12m=0

m=\frac{0}{-12}

m=0

Step 3. Replace the value in the original equation and check if it holds:

\frac{-12m}{(2m+3)(2m-3)} =0

-12m=0

Since m=0,

-12(0)=0

0=0

Since the only solution of the equation holds, the equation bellow doesn't have any extraneous solution

5 0
1 year ago
Read 2 more answers
Consider the table representing a rational function. Which equation could represent a vertical asymptote of the graph of the fun
AleksAgata [21]

Answer:

<h2>x = -1</h2>

Step-by-step explanation:

According to the given table, we see that for <em>x = -1</em>, the function is not defined, that means that the rational function has a restriction there, and such restriction is shown as an asymptote in the graph of the function.

So, basically, we could say that the given rational function has one asymptote and it's at x = -1, which is a vertical asymptote, because all forms like x = k, are vertical lines, that is, they are parallel to the vertical axis.

Therefore, the right answer is the third choice.

7 0
2 years ago
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Chris is standing on a cliff that is 3 feet above sea level. He dives into the water and descends to a depth 10 feet below the s
grin007 [14]
The answer is 7 I’m pretty sure
6 0
2 years ago
Read the foxtrot comic strip. write an explanation, including graphs or diagrams, confirming that running "10 yards out, then 10
MAXImum [283]
You want to drwa a diagram

ok, so 10√2 yards at a 45 degree angle

alrighty

let's use a graphing plane
our starting point is at (0,0), the origin
if we go 10 right and 10 up, we end up at (10,10)
now, if we were to draw a line from our starting point (the origin) to the ending point (10,10), we get a line (duh)
if we measure the angle between the line and the x axis, we get 45 degrees
if we find the distance from (0,0) to (10,10) using the distaance formula, we get 10√2  is the distance from (0,0) to (10,10)

so going 10 out and 10 right is same as 10√2 at 45 degree angle


or you could draw a triangle (see diagram)
legs are 10 and 10, connect them to get a hypotnuse
since the legs are equal lengths, the angles are 45-45-90, we have a 45-45-90 triangle
we can either use the special properies of a 45-45-90 triangle (side lenghs are x:x:x√2) or use pythagorean

so remember if te legs are a,b,,c then a²+b²=c²
a=b=10
10²+10²=c²
100+100=c²
200=c²
sqrt both sides
10√2=c

the lenght is 10√2 at a 45 degree angle

4 0
1 year ago
Determine the rate of change for the equation.<br> 6y = 8x - 40
natulia [17]
The answer is 4/3 thats the rate of change. up 3 over 4
4 0
1 year ago
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