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Tutors Answer Your Questions about Inequalities (FREE)
Question 235618: I don't understand how to write an inequality from a word problem. If that doesn't make sense, my problem is that I don't know how to take an equation from a word problem. The problem is "In a school zone, cars can go no more than 20 mi/h." I think I'm supposed to put x>=20, x meaning cars. That is suppose to mean cars can go less than or equal to twenty. Also I know the > Should have a line under it to show equal to, but I'm not sure how to show that on a computer.
Click here to see answer by Theo(547)   |
Question 235461: Please I need help with this problem:
1. The number of publishers in the usa has increased approximately linearly from 40,964 in 1993 to 73,200 publishers in 2003. Let n be the number of publishers at t years since 1990
(a) find an equation of a linear model to describe the data. (b) what is the slope? what does it mean in this situation? (c) what is the n intercept? what does it mean in this situation?
Click here to see answer by stanbon(25959)  |
Question 234203: if you have an inequality and you are replacing the variable with a number to see if it is a solution to that given inequality, and the problem looks like this:
4*-2+7>15
do you multiply by negative 2 to both sides?
Click here to see answer by checkley77(6671) |
Question 233606: I have a special request on Question 74345. It seems that there was indeed a mistake in the person's formula. Please check mine because I might be wrong. Thanks :))
8x-(x-5)>x+17
8x-x+5>x+17
7x+5>x+17
6x>12
x>2
Click here to see answer by Earlsdon(4871) |
Question 233529: A shop rents canoes for a $7 equipment fee and $2 per hour, with a maximum cost of $15 per day. Express the number of hours x and the cost y as a relation in table form, and find the cost to rent a canoe for 1,2,3,4,and 5 hours.
Click here to see answer by edjones(3194)  |
Question 233438: if you could can you please explain to me how to solve this math problem? thank you soooo much!! (:
(I stands for absolute value since i dont have the actual symbol)
I x I + 4 (is less than) 9
Click here to see answer by Theo(547) |
Question 233083: I'm not the best at word problems. If you are able to help i would be soooo happy (: Thanks you bunches!!
Doreen has started a part-time business making and selling bird houses. Her equiptment costs $75. If she makes a profit of $6 on each, how many bird houses must Doreen sell to make as total profit of more than $135? Write and solve an inequality for this situation.
Click here to see answer by rjd41(9) |
Question 233069: Can you please tell me if I'm doing this right? PLEASE HELP!!! Thanks.
(I'm using l to represent absolute value because my keyboard doesn't have what I need to correctly represent it).
la -4 l(greater than or equal to) 8
a-4 (greater than or equal to) 8
add 4
a (greater than or equal to 12
a-4 (less than or equal to -8
add four
a (less than or equal to) -4
Answer= a (greater than or equal to) 12 and a(less than or equal to) -4
Click here to see answer by Earlsdon(4871) |
Question 233004: If 2 six-sided dice are tossed, what is the probabilty that the sum of the numbers will be greater than 10?
I already know that there are three choices; 5,6 6,5 6,6
But i dont know how to set it up to solve
Click here to see answer by edjones(3194) |
Question 232728: The rope Roz brought with her camping gear is 54 inches long. Roz needs to
cut shorter pieces of rope that are each 18 inches long. What are the
possible number pieces Roz can cut??
Click here to see answer by rjd41(9) |
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