2𝑦 + 5 = 1/2(4𝑦 + 8)
multiply both sides by 2
4y + 10 = 4y + 8
10 = 8,
ahhh, I see your problem, the y's dropped out
ok, if your variables drop out, and you end up with a false statement, such as our 10=8,
then the equation has no solution.
If we end up with a true statement after the variable drops out, then you are dealing with an identity, and there would be an infinite number of solutions.
Hello again! I've got two questions I'm stuck on in an algebra worksheet.
1. Solve the equation:
2𝑦 + 5 = 1/2(4𝑦 + 8)
(I really don't know how to solve these correctly, I've tried everything.)
2. The density of an
object is calculated using
the formula 𝐷 = m/v, where
m is the object’s mass and
v is its volume. Gold has a
density of 19.3 g/cm3. What is the volume of an
amount of gold that has a
mass of 96.5 g?
(Please help me work this out!)
2 answers
I see now, no wonder I couldn't get it! Thank you for helping me understand. Anything for question 2?
1 answer