90 91 92 93 94 95 96 98 99 100
618/7 = 88.28571429% or 88% correct to 2 significant figures.
86-87: 83.3% 87-88: 87.7% 88-89: 90.1% 89-90: 88.8% 90-91: 95.2% 91-92: 94.7% 92-93: 94.8% 93-94: 88.8% 94-95: 91.4% 95-96: 100% 96-97: 90.6% 97-98: 84.5% That's an average of 90.4%
She needs a total of 5 x 95 ie 475 over the five tests. She has 376 so far, so she needs 99 in the next test. 93+89+96+98=376 she wishes to raise her average to 95=> 5x95=475 475-376=99
95,89,91, 93 ,x. Are the five scores , 'x' being unknown and to find. Hence (95 + 89 + 91 + 93 + x) / 5 = 93 Add the four known values. (368 + x) / 5 = 93 Multiply both sides by '5' 368 + x = 465 Subtract '368' from both sides x = 97 So you must score '97' in your final test to bring your mean/average to '93'.
465 / 5 = 93
90 91 92 93 94 95 96 98 99 100
618/7 = 88.28571429% or 88% correct to 2 significant figures.
There are three terms. You add the terms and divide by the numbers of terms to find the average/mean. Hence (91 + 93 + 95 ) / 3 279/ 3 = 93 the mean!!!!!
86-87: 83.3% 87-88: 87.7% 88-89: 90.1% 89-90: 88.8% 90-91: 95.2% 91-92: 94.7% 92-93: 94.8% 93-94: 88.8% 94-95: 91.4% 95-96: 100% 96-97: 90.6% 97-98: 84.5% That's an average of 90.4%
She needs a total of 5 x 95 ie 475 over the five tests. She has 376 so far, so she needs 99 in the next test. 93+89+96+98=376 she wishes to raise her average to 95=> 5x95=475 475-376=99
95,89,91, 93 ,x. Are the five scores , 'x' being unknown and to find. Hence (95 + 89 + 91 + 93 + x) / 5 = 93 Add the four known values. (368 + x) / 5 = 93 Multiply both sides by '5' 368 + x = 465 Subtract '368' from both sides x = 97 So you must score '97' in your final test to bring your mean/average to '93'.
Either take 95% a day, or the average over 4 days must be 95%. For example, the 4 days could be 100%, 90%, 97%, 93%, which average to 95%.
Median = 89Mean = 89Answers by Wolfram|AlphaMode = 93Range = 95-79 = 16
composite numbers 89-97 = 90, 91, 92, 93, 94, 95, 96
Well, honey, the odd numbers between 85 and 95 are 85, 87, 89, 91, and 93. It's not rocket science, just basic math. So, there you have it, the oddballs in that little range.
83 + 87 + 91 + 95 = 356, 356 / 4 = 89. The average of those 4 numbers is 89. You add all of the numbers together and then divide that sum by the number of values.