anonymous
  • anonymous
What is the value of the expression when a = 4 and b = 2? 2a^3+2b^2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Vocaloid
  • Vocaloid
a = 4 b = 2 means you can replace "a" with 4 and "b" with 2
Vocaloid
  • Vocaloid
so if a = 4, what is 2a^3?
anonymous
  • anonymous
24^3

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More answers

Vocaloid
  • Vocaloid
good, so 2a^3 = 2(4^3) which equals...?
anonymous
  • anonymous
B.80?
Vocaloid
  • Vocaloid
nope
Vocaloid
  • Vocaloid
what is 4^3?
anonymous
  • anonymous
12?
anonymous
  • anonymous
@Vocaloid
Vocaloid
  • Vocaloid
nope, remember that ^ means an exponent
Vocaloid
  • Vocaloid
4^3 means we multiply 4 by itself 3 times so 4^3 = 4*4*4 = ?
anonymous
  • anonymous
64
anonymous
  • anonymous
@Vocaloid
Vocaloid
  • Vocaloid
good, now what is 2(64)?
anonymous
  • anonymous
128
anonymous
  • anonymous
@Vocaloid
Vocaloid
  • Vocaloid
good. now, if b = 2, what is 2(b^2)?
anonymous
  • anonymous
2*2=4
anonymous
  • anonymous
@Vocaloid
anonymous
  • anonymous
So my answer is C.120?
Vocaloid
  • Vocaloid
nope
anonymous
  • anonymous
Because, 116+4=120
Vocaloid
  • Vocaloid
2*b^2 = 2*b*b = ?
anonymous
  • anonymous
2*b^2=8
anonymous
  • anonymous
right?
Vocaloid
  • Vocaloid
good. now for the first part we got 128 and for the second part we got 8 now add them together
anonymous
  • anonymous
Ahhhhh Makes sense. 136. The answer is D

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