Answer: Once
Step-by-step explanation: If you do 100 - 10 you get 90 as result, therefore you don't have 100 anymore making the only logical answer to this "ONCE".
Answer:
19
Step-by-step explanation:
168m - it is positive 147 - (-21), so the difference is 168m
Answer:
Step-by-step explanation:
3m² - 5 = 22
3m² = 22 + 5
3m² = 27
m² = 27/3
m² = 9
m = √9 = √3*3
m = 3
Answer:
9 9/20
Step-by-step explanation:
4 1/5 * 2 1/4
Change the mixed nubers to improper fractions
4 1/5 = (5*4+1)/5 = 21/5
2 1/4 = (4*2+1) /4 = 9/4
21/5 * 9/4 = 189/20
Now we change it back to a mixed number
20 goes into 189 9 times (20*9 = 180 with 9 left over)
9 9/20