Question

PLEASE HELP ME!! REALLY NEED HELP!!! PLEASE!!
For his exercise today, Eric plans to both run and swim. Let r be the number of laps he runs and let s be the number of laps he swims.Each lap he runs takes him 4 minutes, and each lap he swims takes him 3 minutes.
He wants to exercise for more than 30 minutes today. Using the values and variables given, write an inequality describing this.

Answer 1

\[4r+3s \ge30\]

Answer 2

^ Correct

Answer 3

Oh \[4r+3s >30\] Wrote the wrong symbol...

Answer 4

@babyblue123

Answer 5

Ok so to answer your question...

Answer 6

\[9+3x \ge t\]

Answer 7

Ugh dang it...

Answer 8

So sorry about it... The next one will be correct..

Answer 9

http://www2.ccsd.ws/sbfaculty/team8e/jecole/Math/Inequalities%20symbols.htm
Going to use it to make sure the symbol is correct

Answer 10

\[9+3x \le t\]

Answer 11

\[2x+3y >90\]

Answer 12

\[3x >5y\]

Answer 13

\[13t+11(106-t)=total~earned\]

Answer 14

Degree measure of fourth angle = \[360-(90+5y+3+3y-9)\]
or \[360-90-(5y+3)-(3y-9)\]
or even \[360-90-5y-3-3y+9\]
I am not sure what type of answer it wants..
I fi it needs to be simplified it would be
\[276-8y\]

Answer 15

If it needs**

Answer 16

I am thinking it should be 1.2 hours...

Answer 17

Yes if you need that in fraction that would be 204/170

Answer 18

I am not sure...

Answer 19

Let the distance between Donna's home and the mountains be d.
Let 's' be the speed on her forward trip.
The speed on her return trip is (s + 16)
Speed = distance / time
time = distance / speed
Time for forward trip = d / s = 8 --- (1)
Time for return trip = d / (s + 16) = 6 ---- (2)
From (1): d = 8s. Put this in (2):
8s / (s + 16) = 6
8s = 6(s + 16) = 6s + 96
8s - 6s = 96
2s = 96
s = 48
d = 8 * s = 8 * 48 = 384 miles.

Answer 20

looks like aum did all the work for you already ...