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Tutors Answer Your Questions about test (FREE)
Question 21997: I was not sure what category to pick so I choose test. Sorry. My Algebra II book calls this type of problem variation. Anyway here is my problem:
For a constant temperature, the pressure (P) of gas varies inversely as the volume (V). If the pressure is 25 lb/in squared when the volume is 400 ft to the third, find the pressure when the volume is 150 ft to the third.
So i know the formula is y=k/x and then you substitue P=k/x. then substitue 25 squared = k/400 third. I think at this point I want to get rid of the denominator of 400 to the third by multiplying both sides by 400 to the third, but I am not sure. Any help would be much appreciated. Thank you for your time.
Click here to see answer by stanbon!(97)   |
Question 23632: 1. A baby is 18 in. long at birth and 27 in. long at ten months. find the rate of change.
2. The cost of group museum tickets is $48 for four people and $78 for ten people. find the rate of change.
3. You drove 30 mi in one hour and 120 mi in four hours. find the rate of change.
4. (-7,1), (7,8) find the slope of the line passing through each pair of points.
5. (4,1 2/3), (-2, 2/3). find the slope of the line passing through each pair of points.
6. (0, 3.5), (-4, 2.5). find the slope of the line passing through each pair of points.
7. (1/2, 8), (1, -2). find the slope of the line passing through each pair of points.
8. (-5, 1/2), (-5, 3). find the slope of the line passing through each pair of points.
9. (0.5, 6.25), (3, -1.25). find the slope of the line passing through each pair of points.
10. Construction: An extension ladder has a label that says, "Do not place base of ladder less than 5 ft from the vertical surface." What is the greatest slope possible if the ladder can safely extend to reach a height of 12 ft? of 18 ft?
Click here to see answer by queenofit(120) |
Question 23720: I had a test question and it was 5w(squared)-2w+4=0 and it told me to find the Discriminant, the nature of the roots, the exact solution and the approx solution. i found the discriminat to be the squareroot of -76...I thought the nature of the roots was down because it was negitive. please help im stumped! i dont have the best teacher an he cant really explain things well and idnt even know what i was supposed to write for the approx. solution. HELP!
Click here to see answer by stanbon(26291) |
Question 23882: write an equation of an equation of the line that passes through the given point and has the given given slope. write the equation in solpe- intercept form.
(3, -9), m=-5 (-5, -6), m= -3 (4,-2) m= 1/2
(1/3,-5),m=8
Click here to see answer by elima(1433) |
Question 24005: I don't understand this we have finals this week, could you please answer and explain the answer for me.
Write a compound inequality that represents each situation. Graph your solution.
1. All real numbers that are greater that -6 but less than 6
2. all real numbers at least -6 and at most 3
There are a, b, c answers hoever I can't the a, b c, answers because of symbols used
Click here to see answer by longjonsilver(2297)  |
Question 24928: ok my question is how would you solve this i think i get it a little but not alot and it is really a ratio and unit price so please help me problem: 720m/day=---m/min thank you for your time and please answer my question
Click here to see answer by smartypants(7) |
Question 24969: The pinball wizard set a new record on a pinball machine.
Her new record score was 26 times the previous high score of 79,864 points.
What was her new record score?
Subject: Multiplication word problems.
Click here to see answer by askmemath(368) |
Question 25360: if the pop. of 100 bacteria doubles every 15 min, how long takes to become 12800? use a(t)=pe^rt.
i found r (rate of change) which is (ln 2)/15. then i tried to plug it in to the equation and got 122 but the answer is supposed to be 105 min. PLEASE HELP
Click here to see answer by kev82(145) |
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