a4galaolaghgh a4galaolaghgh
  • 23-12-2016
  • Mathematics
contestada

Let a = 4 and b = 3.

Create a true statement.

2ab + b^2 ​  >  3a^2 – ?

A. 2a
B. 2b
C. 4a
D. 4b

Respuesta :

kinglanguages
kinglanguages kinglanguages
  • 31-12-2016
the true statement is 4a
Answer Link
apologiabiology
apologiabiology apologiabiology
  • 31-12-2016
evaluate what is known

2ab=2(4)(3)=24
b^2=3^2=9
3a^2=3(4^2)=3(16)=48


A. 2a=8
B. 2b=6
C. 4a=16
D. 4b=12

so

2ab+b^2>3a^2-? translates to
24+9>48-?
33>48-?
add? to both sides
33+?>48
minus 33 both sides
?>15

the only choice bigger than 15 is 16 which is C

answer is C
 
Answer Link

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