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Tutors Answer Your Questions about test (FREE)
Question 188073: The probability that a man will live 5 years more is 3/4 and the probability that his wife will live 5 years more is 1/3. What is the probablity that both will stil live 5years more?
Thank you for your help..=)
Click here to see answer by Mathtut(3670)   |
Question 188526: Find the Vertex
I did the problem but I still dont really get how to do this that much and I dont know if this is right either.
y = x2+6x+8 a=1 b=6
x= b = 6 = -6 = -3
_ _____ _ _____ ____
2a 2(1) 2
y = x2+6x+8
= 1(-3)2+6(-3)+8
= 9-18+8
= 1
Vertex= (-3 ,1 )
Click here to see answer by feliz1965(151) |
Question 188526: Find the Vertex
I did the problem but I still dont really get how to do this that much and I dont know if this is right either.
y = x2+6x+8 a=1 b=6
x= b = 6 = -6 = -3
_ _____ _ _____ ____
2a 2(1) 2
y = x2+6x+8
= 1(-3)2+6(-3)+8
= 9-18+8
= 1
Vertex= (-3 ,1 )
Click here to see answer by jim_thompson5910(13794) |
Question 189373: Suppose you deposit $1000 earned from your summer job in a savings account that pays 4.8% interest compounded monthly.
a. Write an exponetial funcation to model the amount of money in your savings account.
b. How much will you have in your account after 1 yr? After 2yr?
Click here to see answer by feliz1965(151) |
Question 192300: Two airplanes left the same airport traveling in opposite directions. If one airplane averages 400 miles per hour and the other airplane averages 250 miles per hour,in how many hours will the distance between the two planes be 1625 miles?
Click here to see answer by orca(409) |
Question 192322: Hello, I have an algebra test on Wednesday and I have no idea of how to go about doing it. Here is a little idea of the type of questions that may be on the test.
Paula has money hidden in a box underneath her dresser. Her friend Jessica wants to know how much is in the "mystery box", so Paula tells her this riddle: The sum of two numbers is 172. The first is eight more than four times the second. If you can find the first number you will know the amount of money in the box.
Do you know how I would go about trying to solve this?
Click here to see answer by checkley75(3666) |
Question 192336: Hello,
I am having a little trouble with this algebra problem. if someone could be kind enough to tell me how to go about solving it. I would be very grateful
Dustin is designing triangular pen for his angora rabbits named boo bop and flair hair. Now "Boo and Flair" will not settle for just any pen; it has to meet these specifications: The first side of the triangle must be 8 feet shorter than the second side. the third side must be 4 times as long as the first side. Find the length of each side of the triangle if the perimeter is 26.
Click here to see answer by nerdybill(2446)  |
Question 192333: If someone could answer this with an explanation as to how they did it. I would be very grateful.
Sabrina met a really good-looking guy at a dance recently. She wanted to know how old he was so she asked him. He was a bit of a trickster at heart so he said, " The larger of two numbers is 1 less than 3 times the smaller. their sum is 63. If you can find the smaller you will know my age.
Click here to see answer by stanbon(26291) |
Question 192305: Anobject that is projected straight downward with initial velocity v feet per square travels a distance s=vt+16tsquared,where t=time in seconds. If Ramon is standing on a balcony 84ft above the ground and throws a penny straight down with an initial velocity of 10ft per second,in how many seconds will it reach the ground?
Click here to see answer by RAY100(1637) |
Question 192454: A chocolate company uses machines to package candies, the packages are labeled as 8 ounces, the company wants packages to contain 8.17 ounces so that virtually none of the packages contain less than 8oz. A sample of 50 packages is selected and the packing is stopped is there is evidence that the mean amount is different from 8.17oz. Suppose that the mean amount dispensed in a sample of 50 packages is 8.159oz with a sample standard deviation of 0.051oz.
A. Is there evidence that the population mean amount is different from 8.17oz? (use a 0.05 level of significance)
B. Compute the p-value and interpret its meaning.
Click here to see answer by stanbon(26291) |
Question 192451: 38. Suupose that in a one-tail hypothesis test where you reject H0 only in the upper tail, you compute the value of the test statistic Z to be +2.00. What is the P-value Answer is 0.0228
39. In problem 38, what is your statistical decision if you tested the null hypothesis at the 0.05 level of significance?
Click here to see answer by stanbon(26291) |
Question 192942: I got this question on a test and i missed it
its about locus of points...
ther are 4 of them and i dont understand them at all!!
draw a sketch and write the equation for each locus
but i think i only really need the equation
the first says
locus of points equidistant from y= x+4 and passing through y=1 and y=7
2.
locus of points equidistant from (3,4) and (3,-2)
3.
locus points 5 units from origin
4.
locus of points 3 units from origin
and then there are 2 more from a different test.
83.
locus of points 4 units away from x= -2
84.
locus of point equidistant from y= -x+2 passing through y=4 and y=0.
if someone could help me i would be so thankful. homeschool and move alot so its hard for me to get help on my work. this site is a life saver!!
Click here to see answer by RAY100(1637) |
Question 193464: SO im not sure what these are called but this is what it says... Solve these systems of simultaneous equations using either the substitution method or the addition methed.. check your work and supply a solution... #1. x+2y=15 and x-2y=-9 #2. x-y=0 and 7x-3y=24 #3. 3x-8y=10 and x-4y=3 #4. 2x+3y=-5 and 3x-y=20.. please help.. the problems are separated by the number sign(#) when it has xxxxx and xxxxx it is with the same problem.. hope that makes sense and hope you can help me.. thanks
Click here to see answer by ankor@dixie-net.com(6693)  |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890
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