Tutors Answer Your Questions about Equations (FREE)
Question 1109257: When you have an ax+b=cx + d type of equation like 3(x+2)=2(x+2) where I know the answer is -2 when you distribute and solve... ie- 3x+6=2x+4
3x+2=2x
2=-x
-2=x
why can't you start by dividing both sides by (x+2).....and get 3=2...no solution?
Thanks!
Click here to see answer by Fombitz(32388)  |
Question 1109255: Question: 1. A survey given to a random sample of 250 students at a small University asks which facility th...
1. A survey given to a random sample of 250 students at a small University asks which facility they use most often. The results are shown in the table above. If the results of the sample are projected to the entire student population 1,000 students, which of the following is the difference in the number of students who most often use the Union compared to the students who most often use the Music Hall?
Trype of facility Recreation Center Library Union Music Hall
Number of people 60 80 70 40
A.120
B. 280
C. 160
D. 300
Click here to see answer by rothauserc(4718)  |
Question 1109254: 2x+5 If the width of a rectangle and the expression above describes the length, which of the following phrases accurately restates the expression?
A. Two times the sum of the five and the width
B. five times of the sum of two and the width
C. two more than five times the width
D. Five more than twice the width
Click here to see answer by Boreal(15235)  |
Question 1109253: Every member of a high school class of 150 students was polled to see whom they would vote for in the election for student body president. The poll results are shown below.
Candidate 1 46%
Candidate 2 30%
Undecided 24%
If half of the undecided voters vote for Candidate 1 and the other half vote for Candidate 2, which of the following is the number of votes Candidate 2 will receive?
A. 45
B. 63
C. 69
D.0.8
Click here to see answer by Boreal(15235)  |
Question 1109209: Gina rented a moon-walk for 5 hours at a total cost of $235. Lori rented the same moon-walk for 3 hours at a total cost of $165. The cost of renting is based upon a flag set up fee plus a rental rate per hour. How much is the set up fee? What is the hourly rental fee?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1109502: At a basketball game, a team made 53 successful shots. They were a combination of 1-point and 2-point shots. The team scored 91 points in all. Write and solve a system of equations to find the number of each type of shot.
Click here to see answer by josmiceli(19441)  |
Question 1109571: Hi,
I would like to calculate values based on the following given:
23 points is 100%
16 points is 60%
So by that logic, what is the percentage of 17, 18, 19, 20, 21 and 22 points?
Normally, 16 points would equal 70%, and if you assume that 16 points is 60%, then 100% would normally be 26,66. But given the above values, what are the percentages of the points in between 16 and 23 when 16 = 60% and 23 = 100%?
Click here to see answer by rothauserc(4718)  |
Question 1109729: During a games intermission, a team mascot launches t-shirts into the stands. The height (in feet) of an airborne t-shirt t seconds after it is launched is approximated by h=15t^2+75+10
QUESTIONS:
a) How high is a t-shirt 1 second after it is launches?
b)how long was a t-shirt airborne if it is caught on the way up by a fan 100ft above ground level?
Click here to see answer by stanbon(75887) |
Question 1110058: There were 592 tickets purchased for a major league baseball game. The general admission tickets cost $6.50 and the upper reserved tickets cost $8.00. The total amount of money spent was $4199.00. How many of each kind of ticket were purchased?
Click here to see answer by josgarithmetic(39616) |
Question 1110058: There were 592 tickets purchased for a major league baseball game. The general admission tickets cost $6.50 and the upper reserved tickets cost $8.00. The total amount of money spent was $4199.00. How many of each kind of ticket were purchased?
Click here to see answer by ikleyn(52776)  |
Question 1110070: I was assigned a problem that reads:
"Design a fair race in which the two animals have an equal chance of winning if they race at their top speed. Here are a few tips for your design:
•The race is fair if the two animals could finish the race in the same amount of time.
•You can give the slower animal a shorter distance to race.
•Since this is a video game, the race does not need to be realistic—it can be any length, and the animals can run at a constant speed.
The two animals that I chose were animal 1 = cheetah (70mph) and animal 2 = Lion (50mph)
I chose a race of 350 miles and the lion gets a 100 mile start
the equations I have using slope intercept form are:
animal 1 - cheetah - 350=70x
animal 2 - lion - 350 50x+100
y=distance of the race
m-speed of the animal
b=hours
Can you help me and tell me if I am on the right track and how I would graph this? I am struggling with how to graph this. When I try to graph it using the slope intercept I get the same line. How do I do this differently? Or what do I do to create a graph using the equations (if Im correct)??
Thank You for your assistance and guidance
Click here to see answer by stanbon(75887) |
Question 1110449: Suppose a potato initially has a temperature of 75 degrees and the oven is preheated to 375 degrees. Use the formula D = 300 × 0.98t, where D is the temperature difference between the oven and the potato, t is the time in minutes the potato has been in the oven, and all temperatures are measured in degrees Fahrenheit
Click here to see answer by josgarithmetic(39616) |
Question 1110449: Suppose a potato initially has a temperature of 75 degrees and the oven is preheated to 375 degrees. Use the formula D = 300 × 0.98t, where D is the temperature difference between the oven and the potato, t is the time in minutes the potato has been in the oven, and all temperatures are measured in degrees Fahrenheit
Click here to see answer by ikleyn(52776)  |
Question 1110481: 2x+5 If the width of a rectangle and the expression above describes the length, which of the following phrases accurately restates the expression?
A. Two times the sum of the five and the width
B. five times of the sum of two and the width
C. two more than five times the width
D. Five more than twice the width
Click here to see answer by ikleyn(52776)  |
Question 1110612: The Sugar Sweet Company is going to transport its sugar to market. It will cost $5075 to rent trucks, and it will cost an additional $175 for each ton of sugar transported.
Let C represent the total cost (in dollars), and let S represent the amount of sugar (in tons) transported. Write an equation relating C to S, and then graph your equation using the axes below.
Click here to see answer by josmiceli(19441)  |
Question 1110679: Some pages were torn out of a book by mistake. The person repairing the book noticed that the number on one of the facing pages was 11 more than twice the number on their other facing page, and the difference of the page numbers was 23. How many sheeted of paper was torn out of this book?
Click here to see answer by KMST(5328)  |
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36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620, 37621..37665, 37666..37710, 37711..37755, 37756..37800, 37801..37845, 37846..37890, 37891..37935, 37936..37980, 37981..38025, 38026..38070, 38071..38115, 38116..38160, 38161..38205, 38206..38250, 38251..38295, 38296..38340, 38341..38385, 38386..38430, 38431..38475, 38476..38520, 38521..38565, 38566..38610, 38611..38655, 38656..38700, 38701..38745, 38746..38790, 38791..38835, 38836..38880, 38881..38925, 38926..38970, 38971..39015, 39016..39060, 39061..39105, 39106..39150, 39151..39195, 39196..39240, 39241..39285, 39286..39330, 39331..39375, 39376..39420, 39421..39465, 39466..39510, 39511..39555, 39556..39600, 39601..39645, 39646..39690, 39691..39735, 39736..39780, 39781..39825, 39826..39870, 39871..39915, 39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580
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