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If a = 6 - b^(3) and b = - 2, what is th...

If `a = 6 - b^(3)` and `b = - 2`, what is the value of a ?

A

`-8`

B

`-2`

C

2

D

14

Text Solution

AI Generated Solution

The correct Answer is:
To find the value of \( a \) given the equations \( a = 6 - b^3 \) and \( b = -2 \), we can follow these steps: ### Step 1: Substitute the value of \( b \) into the equation for \( a \). We know that \( b = -2 \). We will substitute this value into the equation for \( a \): \[ a = 6 - b^3 \] Substituting \( b = -2 \): \[ a = 6 - (-2)^3 \] ### Step 2: Calculate \( (-2)^3 \). Now we need to calculate \( (-2)^3 \): \[ (-2)^3 = -2 \times -2 \times -2 = -8 \] ### Step 3: Substitute \( (-2)^3 \) back into the equation for \( a \). Now we will substitute \( -8 \) back into the equation: \[ a = 6 - (-8) \] ### Step 4: Simplify the expression. Now we simplify the expression: \[ a = 6 + 8 \] ### Step 5: Calculate the final value of \( a \). Now we perform the addition: \[ a = 14 \] Thus, the value of \( a \) is \( 14 \).

To find the value of \( a \) given the equations \( a = 6 - b^3 \) and \( b = -2 \), we can follow these steps: ### Step 1: Substitute the value of \( b \) into the equation for \( a \). We know that \( b = -2 \). We will substitute this value into the equation for \( a \): \[ a = 6 - b^3 \] Substituting \( b = -2 \): ...
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Knowledge Check

  • If a-b=12 and b/2=10 , what is the value of a+b ?

    A
    2
    B
    12
    C
    32
    D
    52
  • If (2a)/b =1/2 , what is the value of b/a ?

    A
    `1/8`
    B
    `1/4`
    C
    `2`
    D
    4
  • If 2a+b=8 , what is the value of 9^(a)3^(b) ?

    A
    The value cannot be determined from the information gives
    B
    `3^(8)`
    C
    `9^(3)`
    D
    `27^(4)`
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