Answer:To subtract 7 from 102, you have to regroup. You subtract 2 from 100, and 2 from 7, so it is 100-5. 100-5 is 95. The answer is 95. If you don't understand, tell me in the comments. This is just one method of subtracting.
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
-x² + 4x -2 = 0
discrimination for ax² + bx + c =0 is b² - 4ac
4² - 4 x (-1) x (-2) = 8
1) 4 divided by 7 = 0.57
2) 4 times 5 = 20 and 4 times 8 = 32
3) 20 plus 32 = 52
4) 0.57 times 52 = 29.64
5) answer : 29.64
i hope this is correct. i tried to break it down.
Answer:
s
Step-by-step explanation: