Advanced Math/equations

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Expert: Robi Bhattacharjee - 9/3/2008


Question
i need help solving this math equation with the rule being as follows.
suppose=2x-2.5. Find x if y=10

first problem

4x+10=22 how do i work this problem

Answer
Hello Kelly,


2x - 2.5 = 10

2x = 12.5

x = 6.25


4x + 10 = 22

4x = 12

x = 3.

Basically for each problem, just do the opposite thing to both sides and
get x by itself.

So in those problems, I subtracted 10 from both sides and then divided by 4 to get x = 3.


Hope this helped,

Robi

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Robi Bhattacharjee

Expertise

I can answer a variety of questions on mathematics. Questions on trigonometry, calculus(preferably single variable), algebra, geometry, and number theory will be answered. I cannot answer questions on abstract branches of mathematics such as group theory. I also cannot answer questions on statistics. In number theory, I can answer questions on congruences, prime numbers, units, functions, and the riemann-zeta function.

Experience

I have studied advanced math my entire life. I started calculus in sixth grade. I have attended numerous math competitions and I am attending math organizations such as the San-Diego math circle. Also, this year I have been invited to the USAMO which is a prestigious math competition (Every year the USAMO invites 500 students from across the USA to participate in this competition. The top 6 go to represent the USA in the International Math Olympiad).

Organizations
I am in the San Diego Math Circle

Education/Credentials
I am entering high school and have received a perfect score and the STAR test 5 times in a row. I also have gotten recognitions in the AMC 10, AIME, Math Counts, and ARML. Additionally, I have won the San Diego Math Olimpiad twice in a row.

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