Answer:
64
Step-by-step explanation:
Callie is incorrect because of the way she distributes the exponent inside the brackets. This is what she did:
[tex](8 - 2*2)^3 = 8^3 - (2*2)^3 = 512 - 4^3 = 512 - 64 = 448[/tex]
The correct calculation should be done inside the bracket first, then the exponent outside
[tex](8 - 2*2)^3 = (8 - 4)^3 = 4^3 = 64[/tex]
Answer:
In step 1, when Callie distributed the One-half to the 8, she multiplied incorrectly.
Step-by-step explanation:
allie solved this one-variable equation. When she was done, she tried to verify her answer, but found that it was wrong. Can you find her mistake?
1
2
(4k + 8) = 10
1. 2k + 16 = 10
2. 2k = −6
3. k = −3
What was Callie’s mistake?
Callie should have added 10 to both sides in step 2.
In step 1, when Callie distributed the One-half to the 8, she multiplied incorrectly.
Callie divided by 2 instead of multiplying by 2 in step 3.
Callie should have added 16 to both sides in step 2.
