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3 years ago

State whether the following statements are true or false. Justify.

1 answer:

5 0

(i) false;
Let be N = { 0, 1 , 2}; x * y = x + y => a * a = 2a ∈ { 0, 2 , 4}, which is not a( just for a = 0);

(ii) true;
b * c = c * b => a * ( b * c ) = a * ( c * b ); (1)
but, a * ( c * b ) = ( c * b ) * a; (2)

(1) and (2) => a * (b * c) = (c * b) * a.

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Does someone know how to answer these questions I would really appreciate it

irina [24]

Answer:

Number 4: Yes, Numbers 5 and 6: See response below, Number 7: 24 meters

Step-by-step explanation:

Number 4: Negative numbers can't have real number square roots, but negative numbers can have real number cube roots. Take the cube root of -8 as an example. The answer would be -2. This also brings me to another point, discussed in the second response.

Number 5: A cube root is different than a square root being that -

1. the final answer of a cube root is always a negative number while that of a square root is always positive.

2. of course square roots area only applicable to positive numbers, rather cube roots, applicable to both negative and positive numbers

And there are plenty more differences..........

Number 6: I am not sure of a number where the square root and cube root are equal, don't give me credit on this question

Number 7: Take the cube root of 13,824 to get the dimensions, which are all equivalent to 24 (24 * 24 * 24 = 13,824)

*(Just want to add that it's 11:12 in the night, you should get sleep)

6 0

3 years ago

Value of 5 to the power of 4 over 5 to the power of 6

Yuki888 [10]

Answer:

5 to the power of 4 = 625

5 to the power of 6 = 15625

Step-by-step explanation:

5 x 5 x 5 x 5 x 5 = 625

5 x 5 x 5 x 5 x 5 x 5 = 15625

4 0

3 years ago

What is the volume of the cylinder in the picture? Use 3.14 to approximate pi. Round

postnew [5]

-21111.1 I hope this helped you

8 0

3 years ago

Is n=3 a solution? -21 = <img src="https://tex.z-dn.net/?f=%5Cfrac%7B-63%7D%7Bn%7D" id="TexFormula1" title="\frac{-63

nadezda [96]

Yes. -63 / 3 = -21.

Please consider branliest! ^_^

7 0

3 years ago

Read 2 more answers

Sequence Problem Below

VMariaS [17]

Answer:

$\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\la\la\la\la\ddddddddddddddddddddddddddddddddcleverdddddd\ffffffffffffffffffffffffffffffffffffffff\pppppppppppppppppppppppppppppppppppp\dddddd \displaystyle \Large \boldsymbol{} t_1=\boxed{5} \\\\d=\boxed{-4} \\\\t_n=\boxed{9-4n}$

Step-by-step explanation:

$\displaystyle\large \boldsymbol{Rule: t_n=S_{n}-S_{n-1}} \\\\\\S_n=7n-2n^2 \ \ \ \ then \\\\\Longrightarrow S_{n-1}=7(n-1)-2(n-1)^2 =7n-7-2n^2+4n-2 \\\\then \\\\\\S_{n}-S_{n-1}=7n\!\!\!\!\!\!\diagup-2n^2\!\!\!\!\!\!\diagup-7n\!\!\!\!\!\!\diagup+7+2n^2\!\!\!\!\!\!\diagup-4n+2=9-4n \\\\t_n=9-4n => t_1=5\\\\d=t_2-t_{1}=1-5=-4$

6 0

3 years ago