Answer:
300 ft^2
Step-by-step explanation:
Multiply 30 by 10
.05c+.3s=10.25, c+s=100, c=100-s (c is for cards that don't sing and s is for those that do :P)
.05c+.3s=10.25 and c=100-s makes the equation become:
.05(100-s)+.3s=10.25
5-.05s+.3s=10.25
.25s=5.25
s=21, and since c=100-s
c=79
So she bought 21 of the more expensive singing cards...
Answer:
Step-by-step explanation:
<u>Max gross earning was:</u>
- 340 + (11340 - 8000)*4.74/100 = $498.32 rounded to nearest cent
<u>Average per hour:</u>
- 498.32/35 = $14.24 rounded to nearest cent
Imagine this as a circle. The circle will have a radius of 17mi and the lighthouse will be in the middle. The area of the circle will be the area over which the beacon can be seen.

is the equation for the area of the circle where A is the area.
Now we simply plug in our information
A=

A=907.9
Answer:
i think the answer is in the question it is -4,1
Step-by-step explanation: