How do i solve 2/3x + 4 = 2 + 1/2x

Mathematics

1 answer:

Rufina [12.5K]3 years ago

8 0

Answer:

x= -12

Step-by-step explanation:

Firstly, you must isolate x. To do this, we would subtract 1/2x from both sides. This would give us the equation 1/6x+4=2. Then, you would subtract 4 from both sides to even further isolate x. This would give us the equation: 1/6x=-2. Lastly, divide both sides by 1/6 to get x=-12.

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Briony invests some money. Interest is paid on the money at a rate of 2% per annum for the first year and 1% per annum for the s

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Answer:

Brionny invested £8400.

Step-by-step explanation:

Simple Interest

This is a simple interest problem.

The simple interest formula is given by:

$E = P*I*t$

In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.

After t years, the total amount of money is:

$T = E + P$

In this question:

We divide in two intervals, the first year and the second year. We have to know that the amount after the end of the first year is the principal at the start of the second year.

First year:

Amount of 2% interest, during 1 year.

So the interest earned is:

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