All categories

3 years ago

Which expression is equivalent to 7(xy) 7x+y 7x-y x(7y) xy/7

Mathematics

2 answers:

Nuetrik [128]3 years ago

6 0

Answer: $x(7y)$

Step-by-step explanation:

The given expression: $7(xy)$

i.e. a product of 7 and xy.

The operation used here: Multiplication.

Commutative property of multiplication :-

$a\times b=b\times a$ for any numbers a and b.

Associative property of multiplication :-

$a\times(b\times c)=(a\times b\times c)$ for any numbers a , band c.

Now, $7(xy)=(7x)y$ [Associative property of multiplication]

$=(x7)y$ [Commutative property of multiplication]

$=x(7y)$ [Associative property of multiplication]

OverLord2011 [107]3 years ago

5 0

<span>x(7y) this is what it would be</span>

You might be interested in

What is the value of x?? please help

DaniilM [7]

Answer:

x=64

Step-by-step explanation:

Both the semicircle that says 180, and the right angle sign in the image serve to support the idea that all parts of the figure equal 90

Therefore, it is safe to say that you need to subtract 26 from 90 in order to solve for x.

90-26 = 64

8 0

3 years ago

Read 2 more answers

Geometric Series assistance

Levart [38]

we have been asked to find the sum of the series

$\sum _{n=1}^5\left(\frac{1}{3}\right)^{n-1}$

As we know that a geometric series has a constant ratio "r" and it is defined as

$r=\frac{a_{n+1}}{a_n}=\frac{\left(\frac{1}{3}\right)^{\left(n+1\right)-1}}{\left(\frac{1}{3}\right)^{n-1}}=\frac{1}{3}$

The first term of the series is $a_1=\left(\frac{1}{3}\right)^{1-1}=1$

Geometric series sum formula is

$S_n=a_1\frac{1-r^n}{1-r}$

Plugin the values we get

$S_5=1\cdot \frac{1-\left(\frac{1}{3}\right)^5}{1-\frac{1}{3}}$

On simplification we get

$S_5=\frac{121}{81}$

Hence the sum of the given series is $\frac{121}{81}$

5 0

3 years ago

Bracket is necessary in order of operations

Makovka662 [10]

Answer:

yes

Step-by-step explanation:

they are necessary

5 0

3 years ago

Read 2 more answers

Which number does NOT represent a rational number

defon

Answer:

Step-by-step explanation:

B is not rational. B = sqrt(3*3 * 2 * 5) = 3 sqrt(10) sqrt(10) is irrational.

8 0

3 years ago

Read 2 more answers

0 3 8 15 24 35... What is the next value? The choices are 46, 48, 52, and 59.

Leto [7]

The next value would be 48. The values keep increasing by odd numbers. Like the first one is 3 then it goes to 5.

3, 5, 7, 9, 11, 13.....

7 0

3 years ago