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3 years ago

Simply the expression?

Mathematics

2 answers:

Juliette [100K]3 years ago

6 0

It equals 2(x+1) blah blah blah

trasher [3.6K]3 years ago

4 0

Remember the distributive property
a(b+c)=ab+ac
so
2(x+2)=2(x)+2(2)=2x+4

2(x+2)-2=2x+4-2=2x+2

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Factorize the following expression ab-a-b+1

dolphi86 [110]

Group 'em together

a b − a + 1 − b

a b − a = a ( b − 1 )

Notice that there will be a 1 as without it it'll simply be ab

1 − b = 1 ( 1 − b )

Notice that it doesn't match with the upper one... so we'll change the signs

1 ( 1 − b ) = − 1 ( b− 1 )

(try to multiply them now!!

Jot them down in one expression

a ( b − 1 ) − 1 ( b − 1 )

You get!!!!!!

( a − 1 ) ( b − 1 )

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3 years ago

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Tju [1.3M]

Answer: what’s is the 5i

Step-by-step explanation:

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3 years ago

Which contribution is a modification to Dalton's original atomic model?

ahrayia [7]

C
this is because i randomly guessed on ym test and got it right.

3 0

3 years ago

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For the following system, if you isolated x in the first equation to use the substitution method, what expression would you subs

alekssr [168]

Answer:

$x=2y+6$

Step-by-step explanation:

So we have the system:

$-x+2y=-6\\3x+y=8$

If we isolate the x-variable in the first equation:

$-x+2y=-6$

Subtract 2y from both sides:

$-x=-6-2y$

Divide both sides by -1:

$x=2y+6$

Therefore, we would substitute the above into the second equation:

$3x+y=8\\3(2y+6)+y=8$

The answer is 2y+6

Further notes:

To solve for the system, distribute:

$6y+18+y=8$

Simplify:

$7y+18=8$

Subtract:

$7y=-10$

Divide:

$y=-10/7\approx-1.4286$

Now, substitute this value back into the isolated equation:

$x=2(-10/7)+6\\x=-20/7+42/7\\x=22/7\approx3.1429$

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3 years ago

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