Let i = sqrt(-1) which is the conventional notation to set up an imaginary number
The idea is to break up the radicand, aka stuff under the square root, to simplify
sqrt(-8) = sqrt(-1*4*2)
sqrt(-8) = sqrt(-1)*sqrt(4)*sqrt(2)
sqrt(-8) = i*2*sqrt(2)
sqrt(-8) = 2i*sqrt(2)
<h3>Answer is choice A</h3>
Answer:
to be entirely honest i do not know
Step-by-step explanation:
Solving the inequality 
we get 
Step-by-step explanation:
We need to solve the inequality:
Solving:
Adding -4 on both sides:
Divide both sides by -7 and reverse the inequality:
So, solving the inequality we get
Keywords: Solving inequalities
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It would be c
ax-5=b What you have to do is get a to be by itself
So you would add 5 to both sides:
ax-5(+5)=b(+5) = ax=b+5
And then divide x by both sides. You divide because a is multiplied by x on the left side, so to move it to the other side you’d have to do the opposite and divide:
ax /x=b+5 /x
Answer is C ... a=(b+5) /x
X = 42 (i’m not sure your giving enough information)
