To obtain an overall average of 86%, a score of 96 is required on her 4th test.
Let the required score on her fourth test = t
The required average = 86%
Initial scores : 80% + 83.5% + 84.5%
Average = ΣX/ (fx)
fx = total score obtainable = 4 × 100 = 400
ΣX = sum of scores
Average = 86%
0.86 = ((80 + 83.5 + 84.5 + t) / 400)
86 = (248 + t) / 400
400 × 0.86 = 248 + t
344 = 248 + t
344 - 248 = t
96 = t
In other to obtain an overall average of 86%, she has to score 96 in her 4th test.
Learn more : brainly.com/question/15528814
Answer:
40 pints of paints
Step-by-step explanation:
there are 8 pints in a gallon
8 x 5 = 40
The answer is 25/ 3 Good luck
Disjunction would be statements connected with <span>or.
Brainliest?
</span>
Answer: The answer without estimation is 1,519.76 but with estimation it’s 1,520 m.
Step-by-step explanation:
The formula for this situation is A = pi(or in this case 3.14) times the radius squared. If you know the formula then the rest is just to plug in and estimate if you have too.
