I need help with this !!! I’ll give brainliest!!!! (_/~15~)2 !!!! Look at picture please!!
2 answers:
Answer:
15
Step-by-step explanation:
Squaring a square root of a number will just give you back the number since the square and the square root will cancel each other.
Answer:
15
Step-by-step explanation:
a square root multiplied by itself equals the number inside the box, right?
(/~15~)2 = 15
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Step-by-step explanation:
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Let S=score on the second exam, then (67+S+(S+7))/3=84 cross multiply 2S+74=252 2S=178 S=89 So second exam: 89 third exam=89+7=96 Check: (67+89+96)/3=84 ok.