Part A : His solution is incorrect because whenever you have a number "connected to" the variable, you have to divide. & what you do to one side, you have to do to the other. So, for step 2, instead of subtracting 5, you divide by 5. By doing this, you will then have 'x' by itself on the left, & on the right 30/5= 6. So, x=6.
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Step 1: 5x=30
Step 2: 5x/5=30/5 (the 5s cancel out, leaving you just x on the left)
Step 3: x=6
Part B : This solution will have only 1 answer, & that answer is 6. -6 wouldn't be counted as one because if you plug -6 into the equation as x, the sides won't equal, you'll have -30=30 which isn't true.
Hope this makes sense & helps you ! (:
Answer:
(2^2)(20−√9)
=68
Step-by-step explanation:
Answer:
7.80/390=0.02=2%
Step-by-step explanation:
My parents had been fighting since I was a kid. I am 14 now and they still argue every single time. As a teenager, I know there was nothing that I can do. So I made the decision to go to boarding school during high school and now I am studying at oversea university just to get away from them. Don't get me wrong, I love them very much but constantly being in the middle of a fight, I just can't take it anymore. My brother is 13 and I am really glad that he is going to boarding school. It is his own decision and I actually feel sorry for him because I had to left him when I was in high school. We are very close to each other but I had never talk to him about our parents. I'm just waiting for the good time and I believe at these age, he can handle serious discussion. The only peaceful moments that I had at home are mostly the time that I spent with him without my parents. We love to go out just to eat ice cream ,went shopping or just watching cartoons at home. I really miss him. Back to my point, being away from my parents and house is really working for me and I enjoy not having someone arguing with each other 24/7.