May 2023 Question 1ab CSEC Mathematics Past Paper Solution

May 2023 CSEC Mathematics Past Paper Solutions Find the exact value of 5/6 + 2/3 - 12/35 * 7/9 Add 5/6 + 2/3 using common denominators. Multiply both numerator and denominator of 2/3 to get 4/6. Now you get 5/6 + 4/6 = 9/6 = 3/2 when both 9 and 6 are divided by 3. Multiply 12/35 by 7/9. Remember you multiply numerator by numerator and denominator by denominator. (12*7)/(35*9) = 84/315 Next add 3/2 to 84/315. (3*315)/(2*315) = 945/630. (84*2)/(315*2) = 168/630 945/630 + 168/630 = 1113/630 Square root of (1 - cos 37)^2 Square root (1 - 0.7986)^2 = square root (0.2014)^2 = Square root (0.0405) = 0.2014 This, to three decimal places is 0.201. Remember that the number of decimal places is equal to the number of digits to the right of the decimal point. Write 0.00727 in Standard Form. Standard form is written as one none-zero digit, the decimal point, the other digits, and then multiple by ten raised to a power to make both number equal in value. In this case, it is 7.27*10^-3 Website - http://www.MathematicsVideos.com Join the Public CSEC Mathematics WhatsApp Group - https://chat.whatsapp.com/GnhevWAnxRV... My number for WhatsApp and Telegram 876-281-7036