I took my final exam which is worth 12% of my grade,my final had 50 questions,but i think my teacher will grade only 25 questions from my final.I have 73.2% in my class.how much can my final affect my grade?how many points can i get from my final if i passed it?

Answers

Answer 1

Answer: If you get 50 questions, that means you get all 12%.
You add that you're current percentage: 73.2% + 12% = 85.20%

However, if you think you'll only get 25, then you'll get:
(25/50) (12%) = 6%

You add this to your current percentage:
73.20% + 6% = 79.20%

Refer to you passing score and see if 79.20% gives you a passing mark.

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Hannah can paint a room in 20 hours. Destiny can paint the same room in 16 hours. How long does it take for both Hannah and Destiny to paint the room it they are working together.

Answers

The number of hours that it will take for both Hannah and Destiny to paint the room when they are working together is 9 8/9 hours.

Based on the information given, the fraction that can be painted by Hannah in an hour will be 1/20.

The fraction that can be painted by Destiny in an hour will be 1/16.

Therefore, the formula to solve the question will be:

1/20x + 1/16x = 1/1

4x + 5x = 80

9x = 80

Divide both side by 9

9x/9 = 80/9

x = 8 8/9 hours.

Therefore, it'll take them 8 8/9 hours to paint the room.

Read related link on:

brainly.com/question/17170929

amount of room hannah can paint in an hour = 1/20
amount of room destiny can paint in an hour = 1/16
number of hours = x

1/20x + 1/16x = 1
the reason why this formula is true is, the amount of the room painted in the end should be 1 (the whole room)

4/80x + 5/80x = 1
9/80x = 1
9x = 80
x = 80/9 hours
x = 8.89 hours

You and a friend are playing a board game your final score x is 12 points less than your friend final score

Answers

You can put it into expressions:
Your score would be x
Your friends score would be x +12

Hope This Helps You!
Good Luck Studying :)

Maximum or Minimum. Domain and range of
y=x^2-4x+4

Answers

$y=x^2-4x+4\n\na=1;\ b=-4;\ c=4\n\na > 0\ then\ minimum:\n\n(-b)/(2a)=(-(-4))/(2\cdot1)=(4)/(2)=2\n\ny_(min)=2^2-4\cdot2+4=4-8+4=0\n\n\ndomain:x\in\mathbb{R}\n\n\nrange:y\in\left<0;\ \infty\right)$