<span>The phone company charges 10 cents to connect a call for one minute and 8 cents per minute after that.
We call x minute to talk after the first minute.
We have 10+8x</span>≤100 (cents)
and 8x≤100-10
or 8x≤90 and x≤90:8
and x≤11.25
So: <span>How long could you talk on the phone for 1 dollar: it is 11 minute and 15 seconds</span>
Answer:
x=4
y=-3
Step-by-step explanation:
3x+4y=0
2x+5y=7
Change 3x+4y=0 into y= -3/4x
so substitute for y
2x-15/4x=7
-1 3/4x = 7
x=-4
substitue x for y and get
-3/4 * 4
y=-3
Answer:
The radius is 19.42 inches.
Step-by-step explanation:
Start with the formula for finding the circumference of a circle, which is C=2
r.
Then, derive the formula in order to find the radius, which the formula should then look like r= C/2.
Finally, plug in the corresponding numbers, which is r= 122 inches/ 2. The final answer is 19.42 inches.
Answer:
7.5
Step-by-step explanation:
If 8 people are going to the movie theater including Teddy, then we have to divide 60 by 8 which equals 7.5.
