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3 years ago

10

Expand the following: a)2(x + 3)

1 answer:

deff fn [24]3 years ago

6 0

Answer:

<h2><u>2x+6</u></h2>

Step-by-step explanation:

2(x+3)

=(2)(x+3)

=(2)(x)+(2)(3)

=2x+6

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Let a, b, c and x elements in the group G. In each of the following solve for x in terms of a, b, and c.

alina1380 [7]

Answer:

The answer is $x=a^{-1}cb^{-1}$ .

Step-by-step explanation:

First, it is important to recall that the group law is not commutative in general, so we cannot assume it here. In order to solve the exercise we need to remember the axioms of group, specially the existence of the inverse element, i.e., for each element $g\in G$ there exist another element, denoted by $g^{-1}$ such that $gg^{-1}=e$ , where $e$ stands for the identity element of G.

So, given the equality $axb=c$ we make a left multiplication by $a^{-1}$ and we obtain:

$a^{-1}axb =a^{-1}c.$

But, $a^{-1}axb = exb = xb$ . Hence, $xb = a^{-1}c$ .

Now, in the equality $xb = a^{-1}c$ we make a right multiplication by $b^{-1}$ , and we obtain

$xbb^{-1} = a^{-1}cb^{-1}$ .

Recall that $bb^{-1}=e$ and $xe=x$ . Therefore,

$x=a^{-1}cb^{-1}$ .

6 0

3 years ago

A car travels 30 miles in ½ hour. What is the average speed at which the car is traveling in miles per hour?

DochEvi [55]

The answer is 1 mile per hour

7 0

3 years ago

Help. omg.<br><br><br> like i honestly don’t know.. 11 points + brainliest.

Nostrana [21]

Look it up on google

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3 years ago

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Perform the indicated operation. 5/17 x 3/8

Rama09 [41]

Answer:

15/

x

136

Step-by-step explanation:

im pretty sure

5 0

3 years ago

Read 2 more answers

Use I = PRT to solve.

Mice21 [21]

Answer:

Time T = 15 year

Step-by-step explanation:

Given:

Interest I = $270,000

Principal P = $150,000

Rate R = 12% = 0.12

Find:

Time T

Computation:

I = PRT

270,000 = (150,000)(0.12)(T)

270,000 = (18,000)(T)

Time T = 15 year

4 0

3 years ago