Ask question

Ask question

All categories

3 years ago

9

The cost to mail a first-class letter used to be $0.40 the first ounce. Each additional ounce costs $0.20. Fractions of an ounce

are
rounded up to the next whole ounce. How much would it cost to mail a letter that weighs 3.7 ounces?
• $0.60
O $1.00
O $0.90
O $1.20

1 answer:

Hitman42 [59]3 years ago

7 0

$1.00 because the first ounce is 0.40 then you have to times the other 3 ounce by 0.20 then u would have $1.00

You might be interested in

At a bottling plant, 10,000 liters of carbonated water

Dvinal [7]

Answer:

2500

Step-by-step explanation:

10,000/3,000=10/3

10x750=7500

7500/3=2500

8 0

3 years ago

Write 7/10 as a sum of fractions three diffrent ways

Elanso [62]

Answer:

3/10 + 4/10

1/2 + 1/5

1/10 + 3/5

Step-by-step explanation:

3/10 + 4/10 = 7/10 (add numerator and keep denominator)

1/2 + 1/5 = 5/10 + 2/10 = 7/10 (use equivalent fractions)

1/10 + 3/5 = 1/10 + 6/10 = 7/10

I hope this helped and please mark me as brainliest!

3 0

3 years ago

Hurry: Only 5 mins to answer! When Prachisha checked out they charged her sales tax of 7.25%. How much did she pay for the items

ella [17]

101.15

Explanation:

140 x 7.25% = 10.15

140 x 35% = 49

Then we add the tax and subtract the sale :

140 + 10.15 - 49 = 101.15$

Hope it’s right
Best luck with your studying

6 0

3 years ago

Can someone please help me with this ASAP

n200080 [17]

There are 25 grandparents there were in the survey. 4 prefered digital copies, 21 prefered hard copies.

4/25 prefered digital copies
21/25 prefered hard copies

21 is more than 4.
<span>The only one of the possible answers that imply that more people prefered hard copies was the third option. Therefore, "More grandparents prefer using a hard copy than a digital copy." is the most likely to be true. </span>

5 0

3 years ago

I REALLY NEED THIS ONE IT'S MY LAST ONE.

jasenka [17]

$\bf cot(\theta)=\cfrac{cos(\theta)}{sin(\theta)}
\qquad 
% cosecant
csc(\theta)=\cfrac{1}{sin(\theta)}
\qquad 
% secant
sec(\theta)=\cfrac{1}{cos(\theta)}\\\\
-------------------------------\\\\
\cfrac{sec(\theta )}{csc(\theta )-cot(\theta )}-\cfrac{sec(\theta )}{csc(\theta )+cot(\theta )}=2csc(\theta )\\\\
-------------------------------\\\\$

$\bf \cfrac{\frac{1}{cos(\theta )}}{\frac{1}{sin(\theta )}-\frac{cos(\theta )}{sin(\theta )}}-\cfrac{\frac{1}{cos(\theta )}}{\frac{1}{sin(\theta )}+\frac{cos(\theta )}{sin(\theta )}}\implies 
\cfrac{\frac{1}{cos(\theta )}}{\frac{1-cos(\theta )}{sin(\theta )}}-\cfrac{\frac{1}{cos(\theta )}}{\frac{1+cos(\theta )}{sin(\theta )}}
\\\\\\
\cfrac{1}{cos(\theta )}\cdot \cfrac{sin(\theta )}{1-cos(\theta )}-\cfrac{1}{cos(\theta )}\cdot \cfrac{sin(\theta )}{1+cos(\theta )}$

$\bf \cfrac{sin(\theta )}{cos(\theta )[1-cos(\theta )]}-\cfrac{sin(\theta )}{cos(\theta )[1+cos(\theta )]}
\\\\\\
\cfrac{sin(\theta )[1+cos(\theta )]~-~sin(\theta )[1-cos(\theta )]}{cos(\theta )[1+cos(\theta )][1-cos(\theta )]}
\\\\\\
\textit{notice that }[1+cos(\theta )][1-cos(\theta )]\textit{ is a difference of squares}$

$\bf \cfrac{\underline{sin(\theta )}+sin(\theta )cos(\theta )\underline{-sin(\theta )}+sin(\theta )cos(\theta )}{cos(\theta )[1^2-cos^2(\theta )]}
\\\\\\
\cfrac{2sin(\theta )cos(\theta )}{cos(\theta )[1^2-cos^2(\theta )]}\\\\
-------------------------------\\\\
\textit{recall that }sin^2(\theta)+cos^2(\theta)=1\implies sin^2(\theta)=1-cos^2(\theta)\qquad thus\\\\
-------------------------------\\\\$

$\bf \cfrac{2sin(\theta )cos(\theta )}{cos(\theta )[sin^2(\theta )]}\implies 
\cfrac{2\underline{sin(\theta )cos(\theta )}}{\underline{cos(\theta )sin(\theta )} sin(\theta )}\implies \cfrac{2}{sin(\theta )}
\\\\\\
2\cdot \cfrac{1}{sin(\theta )}\implies 2\cdot csc(\theta )\implies 2csc(\theta )$

4 0

3 years ago