please help with this math question 10 points best answer?
1. a lenght of cord is 50 inches long and dylan needs to cut off a piece that will be 5 times as longs as the remaining piece. how long is the shorter piece?
2. a cd store has a sale sign that reads 3+$1. this means that for every 3 cds bought at the regular price the customer gets a fourth cd for a dollar. if brian spent $75 for 12 cds what is the regular price of one cd?
3. if three eights of a number is N is less than one half of that number what is the number?
4. if 5 cattle and 2 sheep cost a farmer $1000 while 2 cattle and 5 sheep cost $1100 what is the cost of each animal?
PLEASE HELP ME WITH THESE I TRIED MY BEST DOING THESE PROBLEMS BUT I STILL AM CONFUSED. PLEASE HELPP ME AND THE BEST ANSWER IS 10 POINTSS=]
1)
1/6 of 50 in. = 8.33 inches
—————————————————————
2)
9x + 3 = 75
—> 9x = 72
—> x = $8.00
——————————————————————
3)
Don’t understand the question—-???
————————————————————–
4)
5c + 2s = 1000
2c + 5s = 1100
From first equation:
—> 2s = 1000 – 5c
—> s = 500 – 5/2c
Substitute into second equation:
—> 2c + 5(500 – 5/2c) = 1100
—> 2c + 2500 – 25/2c = 1100
—> -21/2c = -1400
—> c = $133.33
If c = $133.33, then s = $166.67…give or take a penny or two for rounding.
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