Wednesday

July 30, 2014

July 30, 2014

Posted by **Elle** on Friday, July 24, 2009 at 2:22pm.

a) x+y</13, x>/4, y</6

b) x+y>/13, x<6, y>/4

c) xy</13, x>4, y<6

d) x+y</6+4, xy</13

- Math -
**Marth**, Friday, July 24, 2009 at 7:49pmx+y <= 13, because she will spend up to 13 hours studying.

x >= 4, because she will spend at least 4 hours studying chemistry.

y <= 6, because she will spend up to 6 hours studying French.

You have to look at the keywords - "up to," "at least," to determine which inequality to use.

**Related Questions**

Algebra - Mitch has 3 tests to study for on Thursday night. He needs to spend ...

economic - Suppose, unfortunately , your mathematics and economics professors ...

economic - 10. Suppose, unfortunately , your mathematics and economics ...

math - A school has 63 students studying Physics, Chemistry and Biology. 33 ...

math - the least common multiple of 3, 6,9 i say 18 Sheila practiced hours ...

Math - There are 21 pupils who study Maths, 29 pupils who study french, 26 ...

linear optimization - During a summer session a student enrolls in two courses, ...

Math - I studied for four hours. I added 2 more hours every day for a week. How ...

Algebra - Bill has 12 hours available to study for his final exams in history ...

Economics - Brian is taking three courses this semester: economics, statistics, ...