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GrogVix [38]
3 years ago
15

Which sets of numbers are closed under addition?

Mathematics
1 answer:
8_murik_8 [283]3 years ago
4 0
I would have to go with B as your answer 
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3 0
2 years ago
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Which of the following equations have the correct solution select all that apply
KATRIN_1 [288]
The First One
The Third One
The Forth One

The others result in a lower number than what they are supposed to be. The 3 correct ones end with the exact number of the equations solution number.
7 0
2 years ago
Amber, Bernie, and Carlos are working on a problem together. Their goal is to correctly apply the difference of cubes formula to
NeX [460]

Answer: Carlos is correct

Step-by-step explanation:

2x^5-250x^2

The first step is to factorize out 2x^2

2x^2(x^3-125)

This can be rewritten as

2x^2(x^3-5^3),

Recall, difference if cube (a^3-b^3)

= (a-b)(a^2 +ab + b^2)

from our equation,

a= x

b = 5.

So the difference of cubes will be

2x^2[(x-5) (x^2 + 5x + 5^2)]

=2x^2[(x-5) (x^2 + 5x + 25)]

Carlos followed these steps. So he is correct. Carlos is correct because he correctly factored the GCF, identified a and b, and applied the difference of cubes method.

Amber is incorrect because 125 is equal to b3, not b.

Bernie is incorrect because x2 is not the GCF of the polynomial. The GCF is 2x^2.

6 0
3 years ago
What is the slope intercept form of the equation of the line that passes through the points (2,7) and (4,-1)
natka813 [3]

Slope intercept form is y = mx + b.

Y = coordinate y.

M = Slope

X = coordinate x.

B = y-intercept.

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Plug in: (-1 - 7) / (4 - 2) = -4.

We can just insert the pair (2,7) as our x and y to solve b.

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b = 15.

Original equation:

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y = -4x + 15

5 0
3 years ago
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Please help with my math i am stuck please explain
joja [24]
For the addition problem 1/4 would turn into 2/8 and the 3/8 would stay the same therefore it would be 2/8 + 3/8 =5/8. Then for the subtraction problem 1/4 would turn into 2/8 and 3/8 would stay the same therefore it would be 2/8 - 3/8 =1/8
7 0
3 years ago
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