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2 years ago

11

Someone pls help! if you only know the correct answer! thanks!!

1 answer:

soldier1979 [14.2K]2 years ago

8 0

I hope have a great day

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180 minus what = 45<br><br> i really need this answer thank you

LuckyWell [14K]

Answer: 135

Step-by-step explanation: All you need to do is 180-45=135.

3 0

3 years ago

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Can someone help me this is really confusing????? What is the solution set for the open sentence with the given replacement set?

IgorLugansk [536]

The answer is:

3

w^2 - 1 = w + 5

3^2 - 1 = w + 5

3^2 = 3(3) = 9

9-1 = 8

8 = 3 + 5

8 = 8

6 0

4 years ago

Factorize 2a^2+7a-15

loris [4]

$\huge\bf \pink {\underline{Solution :-}}$

$2 {a}^{2} + 7a - 15$

$= 2 {a}^{2} + 10a - 3a - 15$

$= 2a(a + 5) - 3(a + 5)$

$= (a + 5)(2a - 3)$

$\sf \red{Hence, Answer \: is \: (a + 5)(2a - 3).}$

$\\$

$\bf \purple{ \underline{ Important \: Formulas \: for \: Factorization :-}}$

$• \: {a}^{2} + 2ab + {b}^{2} = {(a + b)}^{2}$

$• \: (a + b)(a - b) = {a}^{2} - {b}^{2}$

$• \: {a}^{2} - 2 ab + {b}^{2} = {(a - b)}^{2}$

$• \: {a}^{3} + 3 {a}^{2} b + 3a {b}^{2} + {b}^{3} = {(a + b)}^{3}$

$• \: {a}^{3} - 3 {a}^{2} b + 3a {b}^{2} - {b}^{3} = {(a - b)}^{3}$

$• \: {(a + b)}^{2} + {(a - b)}^{2} = 2( {a}^{2} + {b}^{2} )$

$• \: {(a + b)}^{2} - {(a - b)}^{2} = 4ab$

$• \: (a + b)( {a}^{2} -ab + {b}^{2} ) = {a}^{3} + {b}^{3}$

$• \: (a - b)( {a}^{2} + ab + {b}^{2} ) = {a}^{3} - {b}^{3}$

$• \: {( \frac{a + b}{2} )}^{2} - ( {\frac{a - b}{2} } )^{2} = ab$

5 0

3 years ago

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Пожалуйста, помогите с векторами!

Alisiya [41]

Answer:

hi there is that something you can block

7 0

2 years ago

1 <br>-6a × - <br> 2 <br>Another time :/ , I'm studying for my post mid term exams..

Zepler [3.9K]

Answer:

<em>a×</em>

<em>a×_</em>

<em>a×_12 </em>

Step-by-step explanation:

1

_

-6

_

2

6×2=12

a×

_

6

_

2

ax

_12

8 0

3 years ago