Comments (4) on “Mathematics VIIJamie is four less than three times older than Emily. If Jamie is 47, which equation shows how to findEmily’s age?omggg”

  2. the inequality is:

    250c+180g≥950

    step-by-step explanation:

    let c denotes the number of days in a week   miyoko worked as a cryptographer.

    and g denotes the number of days in a week she works as a geologist.

    now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

    now miyoko's goal is to earn more than $950 this week.

    hence, the inequality could be represented as:

    250c+180g≥950

    Reply

  3. Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!

    Reply

Leave a Reply

Your email address will not be published.