Answer:
5+2n=7
Step-by-step explanation:
5+2n=7
7-5=2n
2=2n
2÷2=1
n=1
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To solve the above inequality we will try to isolate j by using the opposite operation of a number that we want to remove. So,

Add 8 to each sides.
By combining the like terms.
Multiply each sides by 4 to isolate j.
j<48 By simplifying.
So, the answer is j<48.
Answer:
very hard question
Step-by-step explanation:
Answer:
The first one is No. The second one I do not know unfortunately.
Step-by-step explanation:
I am in the middle of this lesson in my math class as well and I know that in order to make a triangle, you need the two smaller sides to add up to become larger than the biggest side. In the case of the first question, the two smaller sides, 6 and 3 equal 9, which is not bigger than the biggest side which is 10. I hope you can find the answer to the second one, but for now, the first one is No.