Answer:

Step-by-step explanation:
Look at the picture.
Use the Pythagorean theorem:

We have:

Substitute:

<em>multiply both sides by 4</em>
<em>subtract 81 from both sides</em>
<em>divide both sides by 4</em>

Answer:
The better deal would be to buy the 50 envelopes for a total of $2.49
Step-by-step explanation:
Identify what you know:
1) You can buy a pack of 50 envelopes for $2.49
2) You can buy 90 envelopes for $5.50
Divide the number of enveloped by the prices, to find the price of ONE envelope in the pack. See:
$2.49/50 envelopes = $0.0498
$5.50/90 envelopes = $0.061
Also... where is THIS person buying envelopes... I want that price....
Answer:
-1/11
Step-by-step explanation:
add 1/6 to both sides
make the same denominator 12 on the right side
solve
multiply by 12 both sides
11x= -1 divide by 11
x= -1/11
Answer:
I think Frog b wins.
Step-by-step explanation: