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Question 455771: In five long tests, Anna got an average of 90.
If her grades were 92,86, and 82,
with the last two exams having the same score,
what did she get in her last exam?

Click here to see answer by stanbon(57246)

Question 455944: Please help me with this math problem: The mean of a distribution that is approximately normal is 45, and the standard deviation is 2. Tell how the data are distributed with the respect to the mean.
Click here to see answer by edjones(7569)

Question 455638: If i have an 91% in my math class and i am about to take an exam that is 30%(330 points) of my grade, what percent do i need to make on the final to get an A in the class? BTW an A=93%
Click here to see answer by ankor@dixie-net.com(15638)

Question 456087: 24 is 2.5% of what number?
Click here to see answer by rfer(12647)

Question 456087: 24 is 2.5% of what number?
Click here to see answer by edjones(7569)

Question 456145: Is this question correct, thank you
(1/3x^2 - 2/3) (1/2x - 1/2)=
1/6 x^3 - 1/6 x^2 - 1/3x - 1/3
Click here to see answer by Alan3354(30983)

Question 456356: What Is 3 Divided By 1 1/3
Click here to see answer by checkley79(3050)

Question 456663: A student has scored an average of 87 on seven tests. To get an A in the class, she must have an average of 90 or greater om a total of ten tests. What is the greatest integer average the student could receive on the next three tests WITHOUT getting an A in the class?
Click here to see answer by ankor@dixie-net.com(15638)

Question 456801: Can you please explain to me how to calculate Fahrenheit in a word problem. I have looked on the internet but it does not give a full explanation how to resolve a question that involves temperatures?

Click here to see answer by stanbon(57246)

Question 457035: An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for $306. How much did it originally cost?

I know this is simple I am just having trouble remembering how to convert percentages and how to solve the problem. Please help me with the steps involved in this problem. Thank you Kevin.
Click here to see answer by richwmiller(9135)

Question 457164: Can anyone show me how to solve using the elimination method?
x+5y=20
-x+8y=19
Click here to see answer by Alan3354(30983)

Question 457157: Can someone help me solve this solution system using the substitution elimination method?
4x+2y= -14
-7x+y = 56
Click here to see answer by ankor@dixie-net.com(15638)

Question 457153: Can someone help me solve and get the solution of the system using the substitution method?
3m + n =17
m - 7n = 57
Click here to see answer by ankor@dixie-net.com(15638)

Question 457379: Answer to each of the following:
#1: 8(k+3)=5(k-3) solve for k
#2: 6(k-3)=5(-3k-2) solve for k
#3: 7+z+2z+7+1-z solve
please show me how you solve the above.
Thanks!
Click here to see answer by jim_thompson5910(28504)

Question 458047: What is the length of the shorter leg of the 30-60-90 degree triangle with the lengths of 25cm , 21.65cm, and x?
Click here to see answer by richwmiller(9135)

Question 458350: the mean of 4 test scores is 90. What is the sum of the scores?
Click here to see answer by richard1234(5390)

Question 458357: i have a 78% in my chemistry class. i would like to raise it to a 80%. what percent do i need to get on our final to raise it that 2% if a normal test is worth 90% if our grade but the final is weighted about 10%?
Click here to see answer by jim_thompson5910(28504)

Question 458571: if you have an average of 87% on 3 tests what score will you need to get on your last test to earn a 90% average
Click here to see answer by stanbon(57246)

Question 458945: evaluate this polynomail if a=2 b=-3 c=4 d=-5 ab+cd

Click here to see answer by rfer(12647)

Question 459148: you have an 81% in the class what is the lowest grade you could earn on the final and still keep your 81% in the class?
Click here to see answer by rwm(914)

Question 459146: suppose you have an 88% in the class. the final is worth 15% of your overall grade. what do you need to earn on the final to get a 90 % in the class?
Click here to see answer by rwm(914)

Question 458990: If I have a 71 in my class and I get a 54 on a test, what will my grade average out to be?
Click here to see answer by richard1234(5390)

Question 459384: Can you help me find the interesection?
{2,4,7,10} __ {3,6,8}

What is the interesection?
Click here to see answer by sudhanshu_kmr(1152)

Question 459862: anybody help me with this 2 questions...having headache....
a ahip traveling east at 25mph is 10mi from a harbor when another ship leaves the harbor traveling east at 35mph. How long does it take the second ship to catch up to the first ship?
Two cyclist start at the same time from opposite ends of a course that is 51mi long. one cyclist is riding at a rate of 16mph and the second cyclist is riding at a rate of 18mph. How long after they begin will they meet?
Click here to see answer by mananth(12270)

Question 459905: I have a 95% in one of my classes, and i have my final exam next week that is work 20% of my mark, How much would i need to score to bring my grade up to a 96&
Click here to see answer by richwmiller(9135)

Question 461247: Trying to figure out how to calculate my final grade. Please help.
Discussion Participation = 50%
Unit activities = 15%
Course Project Components= 15%
2nd course project comp. = 20%
My Scores
Discussion participation = 100%
Unit activities = 68%
Course Project Components= 98%
2nd course project comp. = 100%
How do I figure out my final grade for course?
Click here to see answer by rwm(914)

Question 461272: Just wanted to make sure I'm calculating this correctly.... My final is worth 200 points & has 100 questions. I need at least a 71% to maintain the grade I have. I can miss up to 29 questions, correct?
Click here to see answer by rfer(12647)

Question 461408: 1. what is the difference between the higest four-digit number and the highest two-digit number?
2. find the smallest possible four-digit numeral.
3. determine the highest three-digit numeral.
please answer it now,,i need your help,,the deadline is today because it is my assignment...
Click here to see answer by solver91311(16868)

Question 462266: Hello there,
My name is Michael, I'm 26 years old and I'm planning to go back to college in the Fall and I need to take Math 141 which is like Algebra 2 for most high schools, however I have a problem, I haven't done any math in about 10 years and need a crash course or need to re-learn it and I'm wondering if you or this site would be able to help me do that, I'm going for a double major, one in Psychology and the other in Geology, I actually need all the way up to Triganology (or however you spell it) but I'm trying to just get back in the swing/groove of things so I can survive in the class room without getting special help while I'm taking classes. Basically I'm trying to get a head start before classes actually start so any help your able to provide is very much appreciated.
Thanks
Michael
Click here to see answer by MathLover1(6622)

Question 462560: Simplify the following rational expression:

Click here to see answer by math-vortex(472)

Question 462858: When taking a test of 20 questions and received a score of 85, how many questions were answered incorrectly?
Carol@sandelcenter.com
Click here to see answer by richard1234(5390)

Question 463115: F.E.U Cooperative Store sold 1,200 copies of this Workbook this first semester, 500 copies remain unsold. What percent of the total number of copies did the store sell??
Please help....
Click here to see answer by alicealc(281)

Question 463327: If i Have a 75.11% in the class and my final is worth 15% of my grade. what is the lowest score i need to get to get a B in the class?
Click here to see answer by jorel1380(2518)

Question 463327: If i Have a 75.11% in the class and my final is worth 15% of my grade. what is the lowest score i need to get to get a B in the class?
Click here to see answer by Alan3354(30983)

Question 463595: The speed of train A is 18 mph slower than the speed of train B. Train A travels 200 miles in the same time it takes train B to travel 290 miles. Find the speed of each train
Click here to see answer by jojo14344(1512)

Question 464048: a launched rocket has an altitude in meters given by the polynomial h+vt-4. if the rocket is launched from a tower 100 meters high with an upward speed of 70 meters what will its hight be after 3 seconds
Click here to see answer by jorel1380(2518)

Question 464605: The function H described by H(x)=2.75x+71.48 can be used to predict the height,in centimeters,of a woman whose humerus is x cm long.
Predict the height of a woman whose humerus is 38 cm long.
Click here to see answer by jorel1380(2518)

Question 464907: I had a 91 average in a class I was taking.... our final was 2 parts and worth 35% of our grade, I scored a 83 on the first half, what would I have had to score on the 2nd half to receive a 79.5 for a final grade?
Click here to see answer by jorel1380(2518)

Question 465043: I really don't know the steps to take to get this answer. Could you please show me a step by step?
The mean IQ score for 1500 students is 100, with the standard deviation of 15. Assuming the scores have a normal curve, how many have an IQ between 85 and 115?
Click here to see answer by stanbon(57246)

Question 465273: i need 120 numbers that average out to an 82.
Click here to see answer by richard1234(5390)

Question 465273: i need 120 numbers that average out to an 82.
Click here to see answer by Edwin McCravy(8882)

Question 464833: if a:b is 3:5 and b:c is 4:7, what is a:b:c?
Click here to see answer by ankor@dixie-net.com(15638)

Question 465483: I have no idea of how to approach this word problem. Can you please show me step by step how to solve this problem?
The mean IQ score of 1500 students is 100 with a standard deviation of 15. How many have an IQ between 85 and 115? How many have an IQ between 70 and 130? How many have an IQ of 145?
Click here to see answer by stanbon(57246)

Question 466083: In April the average temperature for the first ten days was 26 degrees. The average temperature for the next 20 days was 35 degrees. What was the overall average temperature for April?
Click here to see answer by ewatrrr(10682)

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, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330