Questions on Algebra: Average answered by real tutors!

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Question 570946: I took a practice test and got 20 WRONG out of 50 QUESTIONS so what would my grade be? Please explain how you got to your answer.
Click here to see answer by jim_thompson5910(21667) About Me 

Question 570894: 700 points will get 100% how many points will get 80%
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Question 570888: a person took four tests and got an 88, 86, 84, an a 93. the last test is worth 3 test grades. what do u have to get on the last test to get a 90 for the class?
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Question 570837: If i got 77% on my first test what percentage should i get on my last test to get a 90% average?
Click here to see answer by Alan3354(21546) About Me 

Question 570657: hello?

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Question 570259: WHAT IS 82% OF 450
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Question 570259: WHAT IS 82% OF 450
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Question 570267: what is the average of 1/4 and 1/6?
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Question 570171: What is the average (arithmetic mean) mean of 213 and 215 ?

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Question 569905: natasha got 5 different grades on her math tests. Both the mean and median of her scores was 80. What are five scores she could have gotten on the tests?
Click here to see answer by ankor@dixie-net.com(12681) About Me 

Question 569329: im currently getting 97% in my math class, so would the minimum percent i need to get on my next test to keep my mark at 97%, be 97%? if not, then what would the minimum percent needed to keep it at 97%?
Click here to see answer by richard1234(4789) About Me 

Question 569356: Ok, my son is has a problem in Algebra, he is in the 9th grade. I can get the answer for him but he need to write it in algebra terms. I never took algebra in school, so if I can tell you the question. can you please tell me how to write it in algebra terms.
Mike just got a phone bill for $27.60. he is charge $.07 per minute for local calls and $.20 for long distance calls. he talked for a total of 320 minutes. How many long distance minutes did he use?
It sounds just like a typical story problem and easy to solve but feel bad that I can't put it in Algebra form
Thanks so much,
Until Next time,
Sue

Click here to see answer by ankor@dixie-net.com(12681) About Me 

Question 569108: The Radioactive isotope technetium 99m (99mTc) is used in imaging the brain. the isotope has a half life of 6 hours. If 12 milligrams are used how much will be present after three hours and 24 hours?
Click here to see answer by htmentor(580) About Me 

Question 569105: The earliest mechanical clock appeared around 1350 in europe and would gain or lose and average of 30 minutes per day. After that, accuracy roughly doubled every 30 years. find the predicted accuracy of the clock in the years 1700 and 2000.
Click here to see answer by josmiceli(6769) About Me 
Question 569105: The earliest mechanical clock appeared around 1350 in europe and would gain or lose and average of 30 minutes per day. After that, accuracy roughly doubled every 30 years. find the predicted accuracy of the clock in the years 1700 and 2000.
Click here to see answer by Alan3354(21546) About Me 

Question 568769: what grade would i have if i got 15% wrong on my test in math
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Question 568644: In the mathematical statement "90 is 25% of 360," the percentage is:
A) 90
B) 25%
C) 360
D) None of the above.

Click here to see answer by nyc_function(2626) About Me 

Question 567596: a teacher gave five test in english gina got the following score in the fist four tests. 83,86,79, and 80 what must be her score in the fifth test so that he aveege is 85%
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Question 567342: what is the answer to 7 divided by 7/5

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Question 567277: the average of 3 numbers is 63. What is the value of a fourth number x if the average of the four numbers is 60?
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Question 567193: find the average of 7, 11, 14, 28, and 71
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Question 566844: what is the mean of 80+83+79+86
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Question 566780: what is the average of 86, 79, 81, 69, 80
Click here to see answer by jim_thompson5910(21667) About Me 

Question 566511: a coffee can is shaped like a cylinder 13cm high.Its base is a circle with diameter of 10 cm. What is the circumference of the base?
Click here to see answer by bucky(2097) About Me 

Question 566416: A stuent received scores of 51, 79, and 57 on their first three tests for a class. There will be a total of four tests for the class and the student hopes to acheive and average score of n in the class. Express the score, S, needed on the fourth test to acheive this average, as a function of n.
Click here to see answer by ankor@dixie-net.com(12681) About Me 

Question 566313: If I have 73% in a class and I get a 63% on a test and the test weighs 30% what will my grade be
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Question 565819: a student earned a grade of 80% on a math test that had 20 problems . How many did he get right?
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Question 565875: If I have a 84.23% in English class, and I get 93% on my finals which is 20% of my grade, what will my final score be?
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Question 565627: The average SAT score of eleven students was 2,ooo. When Mary's score was added to the other eleven scores, the average went up to 2,010. What is the positive difference between her score and the initial average score?
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Question 565516: A student scored 65,86,and 98 on three algebra test. What must he score on the fourth test in order to have an average grade of at least 85?
Click here to see answer by scott8148(5879) About Me 

Question 565071: If $5000 is invested at an annual interest rate of 9% compounded continuously, how much is available after 5 years? Round to the nearest whole dollar. (Points: 1)
Click here to see answer by nyc_function(2626) About Me 

Question 565040: Suppose 88 people took the final exam in a math class. If 11 people got an A on the final exam, what fraction of the students did not get an A on the exam? Write your answer in lowest terms.
Click here to see answer by stanbon(48502) About Me 

Question 564037: In the beginning of the second quarter i got a 78%. I failed 2 quizzes with a 42 & 64. And tests counts as 40% of my grade. then forgot to do 2 homework sheets which is 10% of my grade also. what is my grade so far?
Click here to see answer by richard1234(4789) About Me 

Question 563895: Hi there, i am trying to find my average for a module at university.

i have two units for the module:
one worth 60% where i got a C12
and the other worth 40% where i got an A18

the marking scale is as follows:
D (9-11) C (12-14) B (15-17) A (18-20)


Click here to see answer by Theo(2967) About Me 

Question 563822: What is the average (arithmetic mean) of 4x + 5, 7x-6,and -8x+2
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Question 563704: My term mark prior to my final exam is 68%
My final exam is worth 20%.
Is there a way i can get a final mark of 80% ?

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Question 563558: the sum of the squares of three consecutive odd number is 83,find the number
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Question 563558: the sum of the squares of three consecutive odd number is 83,find the number
Click here to see answer by richard1234(4789) About Me 

Question 563232: If I have a 57% in my class and it counts for 80% of my grade, what's the lowest grade I can get on my final exam ( worth 20%) in order to pass my class?'
For example: do I have to get a 50% on the final exam to pass my class? or do I need to get 40% to pass etc...

Click here to see answer by stanbon(48502) About Me 

Question 563221: If I have a 57% in my class and it counts for 80% of my grade, what's the lowest grade I can get on my final exam ( worth 20%) in order to pass my class?
Click here to see answer by Alan3354(21546) About Me 

Question 563197: The average of your first 7 quizzes was an 82. What do you need on your next quiz to raise your average to an 84?
Click here to see answer by stanbon(48502) About Me 
Question 563197: The average of your first 7 quizzes was an 82. What do you need on your next quiz to raise your average to an 84?
Click here to see answer by Alan3354(21546) About Me 

Question 562712: everything in the store is 20% of for one day. if computers normally costs 399.99,what is the sale price, rounded to the nearest cent?
Click here to see answer by rfer(10417) About Me 

Question 562562: if my class mark is 59% what do i need to make on an exam woth 30% to receive a passing mark
Click here to see answer by ankor@dixie-net.com(12681) About Me 
Question 562562: if my class mark is 59% what do i need to make on an exam woth 30% to receive a passing mark
Click here to see answer by solver91311(12116) About Me 

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