if i have a 84.6 in a class and want at least a 79.5 to keep my B what do i need to get on the exam if the exam counts for 20% just give me the formula if you could thank you
2007-12-13 06:31:26 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
to the ones saying i should go for the A....half of the class is failing im pretty proud of my B...it is my only one though so that sucks
2007-12-13 06:44:17 · update #1
old grade x .8 + new test score x .2= 79.5
84.6 x.8 + new test score x .2 =79.5
67.68 + nts x .2 = 79.5
nts x .2=79.5 - 67.68
nts=79.5-67.68/.2=59.1
dude go for the A on the test..... u will feel better about the class forever. u can do it, don. i blv in u.
2007-12-13 06:39:31 · answer #1 · answered by ab dominance 5 · 0⤊ 0⤋
1+1=2
2007-12-13 06:34:45 · answer #2 · answered by Spencer S 1 · 0⤊ 2⤋
You have 84.6 percent of 80% of the points, or
0.846 x 0.80 = 0.6788
You want 0.795, so you need: 0.795 - 0.6788 = 0.11820
Now, your points (100) on the exam account for 20% of the points in the quarter, so you need to get
0.11820 * 1 / 0.20 points on the exam to get that 11.820 percent of the course points, or
0.11820 * 5 = 59.1%.
Please, try to pass the exam, anyway. If you ace the exam, you end up with 87.88%!
2007-12-13 06:40:51 · answer #3 · answered by Hiker 4 · 0⤊ 0⤋
a million. 15 - x over 4 = -8 (15 - x) / 4 = -8 (15 - x) = -32 -(15 - x) = 32 x = 40 seven 2. what happens if the 8 have been a favorable? 15 - x over 4 = 8? (15 - x) / 4 = 8 15 - x = 32 x = 15 -32 = -17 3. additionally dealing with percents! what might the p.c. develop be? $50.00 is the unique value $80.00 is the recent value p.c. develop = 60 4. locate the decrease value value 40 9.ninety 9 decrease value 25% 37.40 9
2016-11-26 20:20:54 · answer #4 · answered by dricketts 4 · 0⤊ 0⤋
well, think of it this way...
if the next exam is 20% of the final, than what you already have must be 80%. Therefore, the standing average of 84.5 is 80% of the final grade. If "X" is the final grade which brings the average to 79.5, then 84.5*(0.8) + X*(0.2) = 79.5. Solve for X and the answer is 59.5.
2007-12-13 06:40:08 · answer #5 · answered by Roger S 7 · 0⤊ 0⤋
(4 * 84.6 + 1 * X) / (5) = 79.5
(338.4 + X) / 5 = 79.5
338.4 + X = 397.5
X = 59.1
A 59.1 is the lowest grade you can get to keep a 79.5
2007-12-13 06:37:17 · answer #6 · answered by A A 3 · 2⤊ 0⤋
you need 80%(84.6) + 20%(x) ≥ 79.5
2007-12-13 06:34:05 · answer #7 · answered by Philo 7 · 2⤊ 0⤋
about 60% according to my calculations.
2007-12-13 06:34:49 · answer #8 · answered by ? 3 · 0⤊ 0⤋
Just get over 80% that would ensure it!
2007-12-13 06:34:21 · answer #9 · answered by DopeyXTC 2 · 0⤊ 2⤋
doesn't matter just get the answers right dont just do enough to keep your b
2007-12-13 06:34:44 · answer #10 · answered by Anonymous · 0⤊ 1⤋