Solve the equation to find the unknown value
Rudy bought a can of three tennis balls and a new grip for his racquet. The grip cost $7.49. The total of the items was $9.38 i n all. How much did each tennis ball cost?
Ya I know it's $0.63 each but I need to know what the equation is o_O...help? my heads too lazy
2007-09-19 13:31:35 · 8 answers · asked by bilbobagginz 3 in Science & Mathematics ➔ Mathematics
3n + 7.49 = 9.38
2007-09-19 13:38:14 · answer #1 · answered by sfroggy5 6 · 0⤊ 0⤋
This is simple calculation.
Total price was $9.38 and grip was $7.49.
Take a way $7.49 from $9.38.
The tennis balls are $1.89
Divide the $1.89 with 3.
x = (9.38 - 7.49) / 3
x = 1.89 / 3
x = 0.63
2007-09-19 20:46:53 · answer #2 · answered by aries44 2 · 0⤊ 0⤋
Let 3x =cost of three tennis balls
3x+7.49= 9.38
3x=9.38-7.49
x=1.89/3
x=0.63 cost for each tennis ball
2007-09-19 20:44:35 · answer #3 · answered by Ephesians 2:8 4 · 0⤊ 0⤋
Subtract $7.49 from $9.38 and the divide by 3. $9.38 - $7.49 = $1.89. divided by 3 = $0.63
2007-09-19 21:08:30 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Let x be the price of one tennis ball. (the unknown)
Therefore: 3x + 7.49 = 9.38
So: 3x = 9.38 - 7.49
Or: 3x = 1.89
So: x = 1.89/3
One tennis ball is 0.63
2007-09-19 20:42:38 · answer #5 · answered by Robert S 7 · 0⤊ 0⤋
3x +y=9.38
3x +7.49=9.38
3x=9.38-7.49
3x=1.89
x=0.63
2007-09-19 20:39:48 · answer #6 · answered by Anonymous · 0⤊ 0⤋
are you serious???? you are????
3 tennis balls= $9.38-$7.49
3 tennis balls= $1.89
1 tennis ball= $0.63
2007-09-19 20:39:40 · answer #7 · answered by slick_licker88 3 · 0⤊ 0⤋
($9.38-$7.49)/3
2007-09-19 20:38:45 · answer #8 · answered by skeetermegabite 2 · 0⤊ 0⤋