Answer:
His score decreased by 9 percent this time.
Step-by-step explanation:
From his first history exam he had a score of 90 percent. The difference between his first score and present score is given by
90 - 81 = 9
Final Answer: No Solution
Steps/Reasons/Explanation:
Question: 
<u>Step 1</u>: Divide both sides by
.

<u>Step 2</u>: Expand.

<u>Step 3</u>: Since
is false, we have no solution.
No Solution
~I hope I helped you :)~
Hi
Answer:
3bc
Step-by-step explanation:
3×b=3b
3b×c=3bc
Answer:
lesser x = -4
greater x = 1
Step-by-step explanation:
here's the solution :-
=》

=》

=》

=》

now, there are two cases
case 1) where x + 4 = 0
=》x = -4
case 2) where x - 1 = 0
=》x = 1