The symbol for square root is √. The square roots of negative numbers are undefined.
Substitute for s, b and c. a = 72 + 3(13) - (-24) a = 49 + 39 + 24 = 112.
Although T is negative for 1 < t = 0 for t >= 3 T > 0 for t < -1. T < 0 or negative when -1< t < 3
The sale price of the phone is 1.12×280 = $313.60. The tax is $313.60 - $280 = $33.60.
The number of students who got a mark less than 30 was 23 + 32 + 45 = 100. The number of students who got a mark less than 20 was 23 + 32 = 55. The percentage of students who got a mark less than 30 who got a mark less than 20 was 55÷100 = 55%.
There are 1,000,000 kb in a GB. In 29GB there are 29,000,000kb. Guy can store 29,000,000÷78 = 371,794.87.... pictures. He can store 371,794 complete pictures
For 26 hours they are paid 26×$25 = $650. The money they get for overtime is $850 - $650 = $200. The number of overtime hours is $200÷$40 = 5. x is 5.
Adding 10 to n gives n + 10. Multiplying the number obtained by 3 gives 3(n + 10). Making this equal to 42 gives 3(n + 10) = 42.
The number of degrees in a circle is 360. The total number of people purchasing cleaner was 300. The angle for those who bought B was 198. The number who bought B was 198/360 x 300 = 165.
