# Math

I'm confused.Can someone tell me if I have done this correct.I'm trying to get the average using a weighted scale:
90% ---------- 5%
100% ---------15%
95% --------- 15%
90% -----------5%
94.5% --------60%

1. 👍 0
2. 👎 0
3. 👁 109
1. 90+100+95+90+94.5 = 469.5
469.5/5 = 93.9 = average grade without weighting.(weight of .20 or 20% for each)
now do it with weighting
90*.05 +100*.15+95*.15+90*.05 +94.5*.60= 90.9 with weighting

1. 👍 0
2. 👎 0
posted by Damon
2. 90*.05 +100*.15+95*.15+90*.05 +94.5*.60= 90.9 = 94.95

1. 👍 0
2. 👎 0
posted by Damon

1. 👍 0
2. 👎 0
posted by Sue

## Similar Questions

1. ### Math

ok so i'm kinda sort of confused... I had this for a equation X^2 + 4X - 1 = 0 and then I was like zero??? zero... really zero... hmm... X^2 + 4X - 1 = dy ???????? That zero does represent when Y equals zero correct??? this allows

asked by Kate on January 3, 2010
2. ### Math

Two cars leave town at the same time and travel in opposite directions. The average speed of one car is 15 mph faster than the average rate of speed of the other car. The Carrs are 375 miles apart after 3 hours. Find the average

asked by Asaya on February 24, 2019
3. ### Math

In Wilbur's math class, his grade is based on the average score of six tests, each worth 100 points. Wilbur always worries about his grade. He knows that his average on the four first tests is 88.5. What is the lowest average he

asked by Katherine on September 22, 2010
4. ### Chemistry 12

Hi, I did the acid-base titration lab with HCl and 0.5M NaOH. I need to calculate the moles of NaOH from molarity of NaOH and the average volume used. My English isn't good but is it asking me to find the moles of NaOH using the

asked by Kim on June 2, 2015
5. ### Economic

How is income distribution affected in monopolies? The market for fertilizer is perfectly competitive. Firms in the market are producing output, but they are currently making economic losses. a. How does the price of fertilizer

asked by Mariah on November 26, 2006
6. ### 9th grade algebra/Ms Sue

Okay Ms. Sue. I am in 8th grade but I am taking Algebra with 9th graders. I am very confused with my previous problem. I have asked my Dad but we are both getting confused. Now I have come up with 22. Is this my correct answer?

asked by Reed on August 22, 2012
7. ### Math

Which of the following types of information is suited for display on a double line graph? Average wages paid to men and to women over 5 years Average height of basketball players in five schools Average age of people entering the

asked by Brasil on April 25, 2016
8. ### Math - Calculus

If 75100 dollars is deposited in an account for 13 years at 5.35 percent compounded continuously , find the average value of the account during the 13 years period. The average value in the account is ? ** im alittle confused in

asked by Anonymous on December 7, 2014
9. ### Statistics

I'm confused.Can someone tell me if I have done this correct.I'm trying to get the average using a weighted scale: TOTAL GRADES: WEIGHT 90% 5% 100% 15% 95% 15% 90% 5% 94.5% 60% I multiplied the total grade by the percent, then

asked by Sue on May 2, 2010
10. ### science

Thank you so much, Ms. Sue. Is this correct? A family backpacking at yosemite took 5 hours to climb a mountain trail 7.5 km long. What was the family's average speed? I did it like this. speed=7.5km/5h = 1.5km over h. Is this

asked by Sydney on March 9, 2011

More Similar Questions