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attashe74 [19]
3 years ago
14

Can anybody help me im in need of help

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
8 0
The first question's answer is the second choice. The second question's answer is the first choice. The third question's answer is the second choice.
lilavasa [31]3 years ago
3 0
Part 1: Expand \ 7x(x+4) 

7x*x+7x*4    Distribute 

Use \ Product \ Rule    x^ax^b=x^a^+^b 

7x^2+7x*4
 
 

7x^2+28x

 


Part 2: 4x(2x^3-7x^2+x) 


4x*2x^3+4x*-7x^2+4x*x
 
      Distribute 

4*2xx^3+4x*-7x^2+4x*x 

<span>Use \ Product \ Rule    x^ax^b=x^a^+^b 
</span>
4*2x^1^+^3+4x*-7x^2+4x*x&#10;&#10; &#10; 

&#10;4*2x^4+4x*-7x^2+4x*x&#10; &#10; 

8x^4-4*7xx^2+4x*x   Gather \ like \ terms 

8x^4-4*7x^1^+^2+4x*x 

8x^4-4*7x^3+4x*x 

8x^4-28x^3+4x*x 

8x^4-28x^3+4x^2


Part 3: The \  largest \ number  \ that  \ divides \ evenly  \ into \ 12x \ and  \ 20 \ is  \ 4. 
<span>
</span>GCF = 4<span>


</span><span>Hence Solved 
</span>


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To solve this problem we first have to understand the concept of an angle bisector. Angle bisector is a straight line passes through the vertex of an angle dividing the angle in two equal angles.

According to the condition BD bisects ∠ABC

Therefore the two angles formed by the angle bisector are ∠ABD and ∠CBD.

The angle value of these two angles are equal.

Given:

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Therefore from the above condition:

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Therefore we can conclude that the value of xis 4 and the value of ∠ABC is 68°.

To learn more about angle bisectors:

brainly.com/question/12896755

#SPJ9

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