If she got a 100 on her last test the highest her average would be is an 87%
You can separate them so 6-4 and 1/2 - 1/7
6-4=2
1/2-1/7 you need to find a common denominator- 14
As you need to multiply 2 by 7 to get 14 you multiply the 1 by 7 to get 7/14. For the 1/7, you need to times the 7 by two to get 14 so you times the 1 by 2 to get 2/14.
So you get 7/14-2/14, because you have the same denominators you just subtract the top numbers and leave the bottom so you get 5/14. Add the 2 from earlier and your answer is 2 5/14
Answer:
x = a/2 - b/2
y = a/2 + b/2
Step-by-step explanation:
x + y = a
x + b = y
x - y = -b
x + y = a
x - y = -b
________--
2y = a + b
y = a/2 + b/2
x + y = a
x - y = -b
________+
2x = a - b
x = a/2 - b/2
Answer:
4/5 probability.
Step-by-step explanation:
There is only 1 answer to the multiple choice question so 5-1=4. Because there are 5 answers and four of them are incorrect, the answer would be 4/5 probability.
Hope this helps :)