To mail a first class letter, the u. s. postal service changes $50 for the first ounce and $21 for each additional ounce. it costs $1.34 to mail your letter. how many ounces does your letter weigh

There clearly is a typo in the I assume the price for the first ounce is 0.50$, and then you pay 0.21$ for each additional ounce.

So, the price of a letter is

where is the number of additional ounces.

If you paid 1.34$, the equation is

So, your letter weights 4 additional ounces.

395.84

step-by-step explanation:

2πrh+2πr²

2 (pie)(radius)(height)+2(pie)(radius)^2

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

hope this !