amydunn2004
amydunn2004 amydunn2004
  • 02-06-2017
  • Mathematics
contestada

Find the value of 2a² + 5b² when a= -6 and b= 2

Respuesta :

PHDFlopper
PHDFlopper PHDFlopper
  • 02-06-2017
2(-6^2)+5(2^2)
2(36)+5(4)
72+20
92
Answer Link
Susuu
Susuu Susuu
  • 02-06-2017
Plug in the values -6 into 'a' and 2 into 'b'. 

2a² + 5b² 
2(-6)² + 5(2)²
First solve the exponents  ⇒  -6² means -6 * -6, which equals 36
2² = 2*2 = 4

2(36) + 5(4)
2*36 → 72
5*4 = 20
72 + 20 = 92  

Final answer → 92

Answer Link

Otras preguntas

a warrior swings a slingshot in a horizontal circle above his head at a constant speed. The sling is 1.5 m long, and the stone has a mass of 50 g. The tension
Why is sonar a more accurate way of mapping the ocean floor than weighted lines?
In what material did robert hooke said he saw in cells
In the book, "Of Mice And Men" what song best describes the character Candy? The song must be profanity free.
Which kind of bond is formed when two atoms share electrons to form a molecule?
On which body of water is Brazil? A. Pacific Ocean B. Atlantic Ocean C. Mediterranean Sea D. Caribbean Sea
An atom of lithium-7 has an equal of
Subject content is material learned in a major subject. true or false?
"informal worship does not show true reverence for god" Do you agree?
Colonial women were most likely involved with