All categories

3 years ago

Simplify the expression(2x²y)^3

Mathematics

1 answer:

raketka [301]3 years ago

3 0

Answer:

8x^6y^3

Step-by-step explanation:

(2x2y)3

=8x6y3

You might be interested in

Question 5 of 10

Tamiku [17]

D. 22+(-3). Hope this helps.

5 0

3 years ago

Read 2 more answers

if a and b are the two odd positive integers such that a>b then one of the two numbers ( a+b) /2 and (a-b) /2is odd and even

Tamiku [17]

If $a$ and $b$ are odd positive integers, they are one more than a non-negative even number, i.e. there exists $m,n \in \mathbb{N}$ such that

$a = 2m+1,\quad b = 2n+1$

So, the first expression become

$\cfrac{a+b}{2} = \cfrac{2m+1+2n+1}{2} = \cfrac{2m+2n+2}{2} = m+n+1$

Similarly, we have

$\cfrac{a-b}{2} = \cfrac{2m+1-2n-1}{2} = \cfrac{2m-2n}{2} = m-n$

Now, the parity of these expressions depend on those of $m$ and $n$ . We have four cases:

If both m and n are even:

$m+n+1$ is odd, since $m+n$ is even, while $m-n$ is even

If one of the two is odd and the other is even:

$m+n+1$ is even, since $m+n$ is odd, while $m-n$ is odd

If both are odd:

$m+n+1$ is odd, since $m+n$ is even, while $m-n$ is even

So, in all cases, one between (a+b)/2 and (a-b)/2 is odd, and the other is even.

7 0

3 years ago

1/3 + -7/4<br><br> I am very confused

Lesechka [4]

Answer:

$-\frac{17}{21}$

Step-by-step explanation:

Negative and positive is negative.

Negative and negative is positive.

Positive and positive is positive.

$\frac{1}{3} +-\frac{7}{4}=\frac{1}{3}-\frac{7}{4} = -\frac{17}{12}$

<u>Calculations</u>:

8 0

3 years ago

HELP ASAP PLEASE!! The table shows the numbers of ships that visited a port in the past 5 years. Identify a polynomial function

shtirl [24]

Answer: the answer 2nd one

8 0

3 years ago

Read 3 more answers

Which of the following statements about a plane is not true?

DedPeter [7]

We have to identify the statement about the plane which is not true.

1. Consider the first statement,

" A plane can be thought of as flat". It is true as plane is a flat surface.

2. Consider the second statement,

"The surface of a plane is made up of points". It is true as plane is a flat surface which is made up of points.

3. Consider the third statement,

"A plane can be seen". It is not true as plane is a flat surface which can not be seen.

4. Consider the fourth statement,

"A plane extends infinitely in all directions". It is true as plane is a flat surface that extends infinitely along its edges.

3 0

3 years ago

Read 2 more answers