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

25 points for answer!! Consider the circle graph below of the type of flowers planted in a garden. If 57 carnations are in the garden, how many roses are in the
find the positive root of x^2 + 6x -27 = 0
If 50 is increased by 40%, what is the new amount?
How are breathing retraining techniques similar to relaxation techniques? a. both involve instructions on breathing control. b. they are not similar. c. both te
Marsha gave the cashier $20 to pay for 3 pairs of socks. The cashier gave her $5.03 in change. Each pair of socks cost the same amount. What is the cost in doll
Write the all factors and find the GCF for 4,10,12,16 thank you
I was planning to take three courses basic math speech and choir
How do incentives affect suppliers in a purely competitive market?
Please answer this !! Show how you solved this problem ! Show your work !!
Which sentences contain adjective clauses? Rebecca, who was a computer whiz, restored the crashed computer. Wherever he went, Ben got a warm welcome. Matt took