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

what can i do to solve for the variable y-4=0
From which tab can you format individual cell data like any other text? A. Table Tools Layout B. Table Tools Design C. Home D. Design
Someone please help me with this?
11. A. 12 min B. 5 min C. 20 min D. ....
1 )why does the fact that something is scarce require that we make choices
With atmospheric perspective, objects further from the viewer appear:
Can someone help me with this????
PLEASE HELP!!! WORTH 3 GRADES
​during aerobic exercises such as dancing, as glucose is used by the muscles, ____. a. ​slow-twitch muscles produce glucose anaerobically b. ​glucose use de
Which invention during the Industrial revolution led to faster ships and more factory produced goods?