Age Problem, The sum of the ages of Dorothy and Dona is 41. In 5 years, Dor...

The sum of the ages of Dorothy and Dona is 41. In 5 years, Dorothy will be twice as old as Dona. Find their age 3 years ago.

Evaluate log function, Example    Evaluate log 5 7 . Solution At f...

Example    Evaluate log 5 7 . Solution At first, notice that we can't employ the similar method to do this evaluation which we did in the first set of instance. It would n

PAIR OF linear equation in two variable, REENA HAS PENS AND PENCILS WHICH T...

REENA HAS PENS AND PENCILS WHICH TOGETHER ARE 40 IN NUMBER.IF SHE HAS 5 MORE PENCILS AND 5 LESS PENS,THEN THE NUMBER PENCILS WOULD BECOME 4 TIMES THE NUMBER OF PENS.FIND THE ORIGIN

Solving polynomial equations, can you explain to me how to solve x^3+x+5

can you explain to me how to solve x^3+x+5

Example of mixing problems, How much of a 50% alcohol solution should we mi...

How much of a 50% alcohol solution should we mix with 10 gallons of a 35% solution to get a 40% solution? Solution Let x is the amount of 50% solution which we need.  It me

Vertical angles,

Example of simpler method, Example   Solve out following.              ...

Example   Solve out following.                                           5 3x =5 7x-2 Solution In this we have the similar base on both exponentials hence there really

Find value of, xifx+6=33..

xifx+6=33..

Translating equations into problems, x-45=47

x-45=47

Multiplying integers, (-9) (-88) (-7)

(-9) (-88) (-7)