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jonny [76]
3 years ago
13

How can you show that two objects are proportional with an equation

Mathematics
1 answer:
masha68 [24]3 years ago
6 0
For an equation to be proportional, it must have no y intercept, and it must have a slope. So, 
<span>y=4x+4  This equation isn't proportional because it has a y-intercept (+4)
y=4x+2  </span>This equation isn't proportional because it has a y-intercept (+2)
y=4x      This equation is proportional because it has no y-intercept, and a                     slope.
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Answer:

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Step-by-step explanation:

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3 0
3 years ago
3. What are the roots of the polynomial y = x³ - 8?
zzz [600]

Step-by-step explanation:

x^3 is a perfect cube, 8 is a perfect cube, so we use difference of cubes.

{a}^{3}  -  {b}^{3}  = (a - b)( {a}^{2}  + ab +  {b}^{2} )

Cube root of x^3 is x.

Cube root of 8 is 2

So

a=x

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(x - 2)( {x}^{2}  - 2x + 4)

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If we do the discriminant, we get a negative answer so we would have two imaginary solutions,

Thus the only real root is 2.

If you want imaginary solutions, apply the quadratic formula.

1 + i  \sqrt{ 3 }

and

1 - i \sqrt{3}

4 0
1 year ago
Need help with #1 and #2 on this page. Thanks!
iogann1982 [59]

Find the probability of obtaining 3 heads when flipping 4 coins

7 0
3 years ago
Convert the fraction 2/5 to a decimal and a percent. Show all of your work and explain your answer.
Zielflug [23.3K]
To the convert 2/5 to a decimal it will be 0.40 because during when you do 5 do x20 so 1/5 = 0.20 and so on 
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3 0
3 years ago
Read 2 more answers
How many segments have the midpoint (2, -3).Explain your reasoning.
Amanda [17]
Need a little bit more information to be able to answer the question
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