Tutors Answer Your Questions about Inequalities (FREE)
Question 78701: An Arithmatic student needs an average of 70 or more to receive credit for the course. She scored 82, 64, and 98 on the first three exams. Write an inequality representing the score she must get on the last test to receive credit for the source.
Click here to see answer by checkley75(3666)  |
Question 79133: a long distance phone call costs $0.25 for the first minute and $0.10 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding $5.
Grph the solution set of x>5.
Click here to see answer by ptaylor(2198)  |
Question 79218: Solve and graph the solution set. 3(x-4)>7x-9. I do not know to solve this problem at all. Your help will be greatly appreciated thank you so much and God bless you to continue helping all of us.
Click here to see answer by sprolden(40) |
Question 80308: Please help me with this story problem involving inequalities. Carlos has more than 80 coins, all nickels and dimes. He has five more dimes than nickels. What is the least mumber of nickels that Carlos can have?
My work:
n+d>80
d=n+5
n+n+5>80
2n>75
?????
Click here to see answer by stanbon(75887) |
Question 80309: My question is from a worksheet. It is as follows:Tony is 50 years older than Brett. Twenty years ago Tony was at three times as old as Brett was. At most, now old is Brett now?
I am really lost on this question.
Click here to see answer by 28451320(1) |
Question 80310: My question is from a work sheet.
Two trains in opposite direction pass each other on parallel tracks. One train averages at most 80 km/h, and the other averages at most 65km/h. What is the least possible time that it could take for the two trains to be 290 km apart.
TOTALLY LOST!!!
Click here to see answer by stanbon(75887) |
Question 81007: Please help solve. The problem is: Solve for x. Collect x's on the LEFT side. The solution should be presented with x first, the correct inequality symbol, then the number.
x + 4 – 8x – 1 > 3(x – 2)
My work?
x - 8x + 4 –1 ³ 3x –6
7x + 3 3x – 6
7x + 3 –3 ³ 3x –6 –3
7x 3x – 9 lost???
Click here to see answer by stanbon(75887) |
Question 81006: Please help this is the question: . Solve for x. Collect x’s on the LEFT side. The solution should be presented with x first, the correct inequality symbol, then the number.
5(2x – 1) < -8
my work?
5(2x-5)<-8
10x-5<-8
10x-5+5<-8+5
10x < -3
10x/10 < -3/10
x < -3/10
Click here to see answer by stanbon(75887) |
Question 83526: Adjusting Antifreeze. Angela needs 20 quarts of 50% antifreeze solution in her radiator. She plans to obtain this by mixing some pure antifreeze with and appropriate amount of a 40% solution. How many quarts of each should she use?
Click here to see answer by ptaylor(2198) |
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