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Bond [772]
3 years ago
8

Which of the following is not a proportion?

Mathematics
2 answers:
Alina [70]3 years ago
5 0
4/10 = 12/20 since 4/10 = 10/20
Ivahew [28]3 years ago
4 0

Hiya there! :D The answer to your question is 4/10= 12/20. That is NOT A PROPORTION. Anyways I just did for the first one 1*3=3 and 4*3= 12 which is 3/12. Next 4/10= 12/20. Nope you can't do that. 4/10= 0.40 and 12/20= 0.60 those are not the same.2/4= 3/6 those both equal 1/2. You can simplify them and make them 1/2 and they are the same! They both equal to 1/2 and 0.50. Last but not least 8/6= 20/15. 8/6= 1.333333 and 20/15= 1.3333333. So yeah that's how I got my answers! ;D

Hope I helped! Have a nice day! ;) :D :)

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Factor the polynomial F(x) =x^3-x^2-4x+4 completely.
Norma-Jean [14]

Answer:

Step-by-step explanation:

PART 1:

Possible roots by noticing the coefficient of first term:

x = 1, -1

PART 2:

1 | 1  -1  -4   4

 <u>      1   0  -4</u>

   1   0  -4  0

The remainder is zero, hence one factor is (x-1)

PART 3:

x^3-x^2-4x+4=(x^2-4)(x-1)\\\\x^3-x^2-4x+4=(x+2)(x-2)(x-1)

PART 4:

f(x)=(x+2)(x-2)(x-1)\\\\=(x^2-4)(x-1)\\\\=x^3-4x-x^2+4\\\\=x^3-x^2-4x+4

6 0
3 years ago
Mm
Novay_Z [31]

Answer:

x + 2(2x-4) = 10

Step-by-step explanation:

Here in this question, we want to select which is the correct answer if we substitute for the value of y in the second equation, using the first.

In the first, we have;

y = 2x -4

Now, let’s input this value of y into the second equation.

By direct substitution, what we have is the following;

x + 2y = 10

—-> x + 2(2x -4) = 10

8 0
3 years ago
Which numbers represent the solutions to the inequality below? Check all that apply.
Degger [83]
Your answer will be -3 only
3 0
2 years ago
Francine has a piece of wood that is five 5 5/12 feet long she uses three 3 1/4 feet of the wood from a science project how much
zhannawk [14.2K]

Answer:

4/3 ft

Corrected question;

Francine has a piece of wood that is five 5/12 feet long she uses three 1/4 feet of the wood from a science project how much for just Francine have left.

Step-by-step explanation:

Given;

Francine has a piece of wood that is five 5/12 feet long.

Total amount of wood T = 5 × 5/12 ft = 25/12 ft

she uses three 1/4 feet of the wood from a science project.

Amount of wood Used U = 3 × 1/4 = 3/4 ft

The amount of wood left equals the total amount of wood minus the amount of wood used;

The amount of wood left L = T - U = 25/12 - 3/4

L = 25/12 - 9/12

L = 16/12

L = 4/3 ft

6 0
3 years ago
What is used to support the steps of a geometric proof?
Sunny_sXe [5.5K]
The answer would be the third choice as Geometry is essentially based on other proven theorems, axioms, and definitions. 
8 0
3 years ago
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