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guapka [62]
4 years ago
9

I need help on these 9 questions!!!!

Mathematics
1 answer:
sineoko [7]4 years ago
6 0

Answer:


Step-by-step explanation:

13. -2(4)= -8     14. 6(-5)= -30       15. 3(-5)(2)= -30

16. -12(4)= -48     17. -4(2)^2= -64      18. (-5)^2= -25

19. -5(-3)(4)= =60   20. 13(-5)(2)= -130.  21. 3(-3)= -9



Hope this helps!


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Solution set of 6x2=13x+5
Lena [83]

Answer:

x = -1/3         x = 5/2

Step-by-step explanation:

6x^2=13x+5

Subtract 13x from each side

6x^2-13x=13x-13x+5

6x^2-13x=5

Subtract 5 from each side

6x^2-13x-5=5-5

6x^2-13x-5=0

Factor

(3x+1   )(2x  -  5 ) =0

Using the zero product property

3x+1 =0    2x-5 =0

3x=-1          2x =5

x = -1/3         x = 5/2

6 0
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Stels [109]
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