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LiRa [457]
3 years ago
13

PLZ HELP ME D HOW J IT EHJ

Mathematics
1 answer:
Pavlova-9 [17]3 years ago
3 0
180 and 20 other words eeeee
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Find the sum of 12a + 7b, −6a − 9, and 14a − 12b.
Ivan
The answer is:  [A]:  " 20a − 5b − 9 " .
______________________________________
Explanation:
_______________________________________________
  (12a <span>+ 7b) + (−6a − 9) + (14a − 12b) =
 
   12a </span><span>+ 7b  +  1(−6a − 9) + 1(14a − 12b) =
</span>    
   12a + 7b + (1*-6a) + (1*-9) + (1*14a) + (1* -12b) =
      
    12a + 7b − 6a − 9 + 14a − 12b =  ?

Combine the "like terms:

12a − 6a  + 14a = 20a ; 

7b − 12b =  - 5b ;

and then we have "-9" ;
_____________________________________________________
So, write as:   " 20a − 5b − 9 " ;  which is:  Answer choice:  [A].
______________________________________________________
8 0
3 years ago
Read 2 more answers
The equation y - 2 = 3(x + 1) is in point-slope
attashe74 [19]
Y-2=3x+3
Then add two
So y=3x+5
Hope this helps sorry if wrong
5 0
4 years ago
Calculate the missing angle and give a reason for your answer
Vanyuwa [196]

Step-by-step explanation:

the triangle is an isosceles triangle hence the base angles are equal

sum of angles in a triangle is 180°, therefore, the top angle =180-(62+62)

the top angle =56°

h°= the top angle because alternate angles are equal

hence, h=56°

5 0
3 years ago
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Help pls and thank you :)
ss7ja [257]

Answer:

Step-by-step explanation:

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3 0
3 years ago
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Rearrange w=3(2a+b)-4 to make a the subject
garik1379 [7]

Answer:

w-6b+4/6

Step-by-step explanation:

To get the answer you have to first open the bracket which will give you w=6a+6b-4.You then take 6b-4 to the other side to meet w after this divide all by 6 to make a the subject of the formula.

4 0
3 years ago
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