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labwork [276]
3 years ago
13

Which statement is NOT always true?

Mathematics
1 answer:
BartSMP [9]3 years ago
3 0
B. The product of two irrational numbers if rational

Example: The square root of 2 times the square root of 3, is the square root of 6, which is still irrational. 
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factor completely 4x5 − 20x4 − 36x3. 4(x5 − 5x4 − 9x3) x3(4x2 − 20x − 36) x2 − 5x − 9 4x3(x2 − 5x − 9)
Mila [183]

Consider the polynomial 4x^5 - 20x^4 - 36x^3. It has three terms and their greatest common factor is 4x^3.

Since

4x^5=4x^3\cdot x^2,\\20x^4=4x^3\cdot 5x,\\36x^3=4x^3\cdot 9,

then

4x^5 - 20x^4 - 36x^3=4x^3(x^2-5x-9) (you write in brackets the same sign as the corresponding term has).

Answer: correct choice is D.

3 0
3 years ago
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Subtract these polynomials.<br> (3x2 – 2x + 5) – (x2 + 3) =
nika2105 [10]

Answer:

D. 2x^2 - 2x + 2

Step-by-step explanation:

(3x2 – 2x + 5) – (x2 + 3) add or subtract like terms

3x^2 - x^2 - 2x - 3 + 5 = 2x^2 - 2x + 2

6 0
3 years ago
Yeah 82,300,000 scientific notation
IceJOKER [234]

Answer:

Dear user,

Answer to your query is provided below

82300000 in scientific notation = 8.23 × 10^7.

Step-by-step explanation:

Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8.

4 0
3 years ago
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Y=x+2
pickupchik [31]

Answer:

Noiccce

Step-by-step explanation:

Noiccce

8 0
3 years ago
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Find the area of the shape
bogdanovich [222]
First you find the area of the square which is base x height (2x2) = 4 then you find the area of a circle which is pi R squared so you were do 2÷2 because radius is half the diameter so The formula that would be 3.14x1^2 and the answer is 3.14 then you add 4+3.14 which then equals 7.14in
6 0
3 years ago
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