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klemol [59]
4 years ago
13

Which one doesn't belong?

Mathematics
1 answer:
Karo-lina-s [1.5K]4 years ago
7 0

Answer:

i would say C

Step-by-step explanation:

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Janis used the sum of cubes formula to factor 27x^3+8 Her answer is (3x+2)(9x^2-6x+2^2) Identify her error if any.
kicyunya [14]

Answer:

According to the sum of cubes formula, Janis is correct

Step-by-step explanation:

The sum of cubes formula is given as follows;

x³ + y³ = (x  + y)·(x² - x·y + y²)

The given expression is presented as follows;

27·x³ + 8

The given expression can be expressed as 27·x³ + 8 = (3·x)³ + 2³

Therefore, using the sum of cubes formula, we have;

(3·x)³ + 2³ = (3·x + 2)·((3·x)² - 3·x·2 + 2²) = (3·x + 2)·(9·x² - 6·x + 2²)

∴ 27·x³ + 8 = (3·x)³ + 2³ = (3·x + 2)·(9·x² - 6·x + 2²)

Therefore, Janis is correct, by the sum of cubes formula, we get;

27·x³ + 8 = (3·x + 2)·(9·x² - 6·x + 2²).

5 0
3 years ago
1Plss help,,,two to three sentences<br><br>Pythagorean theorem
saveliy_v [14]

Answer:

10

Step-by-step explanation:

so if u draw his paths you get a right triangle and so u can use Pythagoras theorem with is a²+b²=c²

so it will look like

c²= 8²+6²

c²=

\sqrt{100}

c²=10

6 0
3 years ago
Read 2 more answers
Need help ASAP!!!!!!!
ELEN [110]

Answer:

4) 90-37 = 53°

5) Supplementary

6) 90-62 = 28°

7 0
3 years ago
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Manuel thinks that the temperature will decrease by -1.3 degrees per week for the next 12 weeks. If the temperature today is 52
fredd [130]

Answer: The temperature will be 36.4 degrees.

Step-by-step explanation:

Hi, to answer this question we have to subtract the product of the temperature decrease per week (-1.3) and the number of weeks (12) to the actual temperature (52).

Mathematically speaking:

52 - (1.3 x 12)  

Solving:

52-15.6

36.4 degrees

The temperature will be 36.4 degrees.

Feel free to ask for more if needed or if you did not understand something.

6 0
4 years ago
172.6 divided by 9. plz awnser in decimals. when i look it up on a calculator it said 19.1777777778
kow [346]

Answer:

it is 19.17

Step-by-step explanation

rounded it and its 19.17

8 0
3 years ago
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