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Questions in mathematics

[Done] Write the number in ascending and descending order. a. 234, 455, 123, 345 b. 134, 617, 167, 189 c. 109, 239, 208, 196

[Done] In an examination, 80 students secured first class marks in English or Mathematics. Out of these, 50 students obtained first class marks in Mathematics and 10 students in English and Mathematics both. How many students secured first class marks in English only?

[Done] 19. -(5-9) + (12-8) = 20. 24 - [(12-5) - 3 * (23-28)] =

[Done] Compare the numbers. Write on the blank. a. 10 _ 8 b. 21 _ 32 c. 30 _ 40 d. 81 _ 81 e. 9 _ 10 f. ||||||||||||||||||||| _ 23

[Done] Factor. $x^2+13 x+42$ $(x-6)(x-7)$ $(x+6)(x-7)$ $(x+7)(x+6)$ $(x+7)(x-6)$

[Done] If $f(x)=\lceil x\rceil-5$, what is $f(8.6)$?

[Done] Solve for $y$. $ \begin{array}{l} y-4=2(x+5) \\ y=[?] x+\square \end{array} $

[Done] Read the following description of a relationship: In a board game, the player who makes the last move receives a 3-point bonus for ending the game. Let [tex]$s$[/tex] represent the score before the endgame bonus and [tex]$f$[/tex] represent the final score. Complete the table using the equation [tex]$f=s+3$[/tex]. | [tex]$S$[/tex] | [tex]$f$[/tex] | |---|---| | 1 | | 2 | 5 | | 3 | 6 | | 4 |

[Done] [tex]\frac{3}{4}+\frac{5}{9}=+\quad+\quad=[/tex]

[Done] $87,000 \times \frac{\left(\frac{0.065}{12}\right)}{\left(1+\frac{0.065}{12}\right)^{(12.8)}-1}