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Mathematics 9 Online
OpenStudy (anonymous):

i need help with cosecutive numbers

OpenStudy (anonymous):

yup lets try

OpenStudy (anonymous):

ok the girl has 24 dollars and she wants to buy 7 pencils now she has 10 dollars left,how much were the pencils.,i have to write an equation for it

OpenStudy (anonymous):

2 dollars

OpenStudy (anonymous):

Let x be the cost of one pencil, so we have: 24 - 7x = 10

OpenStudy (anonymous):

So x = 2

OpenStudy (anonymous):

omg thank you sooo much

OpenStudy (anonymous):

the sum of 3 consecutive even numbers the sum is 48 .smallest?

OpenStudy (anonymous):

14, 16, 18

OpenStudy (anonymous):

3x+6=48, x=12

OpenStudy (anonymous):

No, 12 is wrong, 12+14+16 is 42, not 48

OpenStudy (anonymous):

sorry its 14

OpenStudy (anonymous):

x is the smallest, so x + (x+2) + (x+4) = 48 = 3x + 6, so 3x = 42, and x = 14

OpenStudy (anonymous):

magazine $5 she bough 4 eraser and spent the total of $25 how much was the eraser (pleas show work this is an equation problem) i need answers

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