49). Solve the system by graphing.
3x + y = 6
3x – y = 0
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50). x – 2y < 4
x > 1
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28). Anna has 12 bills in her wallet, some $5 and some $10. The total value of the bills is $100. How many of each bill does Anna have?
thanks
2007-02-13 15:41:23 · 4 answers · asked by dee free 2 in Science & Mathematics ➔ Mathematics
6x=6
x=1
y=3
2y<4+x
y<(4+x)/2
x=2,3,4,5
y=3,4,5,6
4bills-$5
8bills-$10
2007-02-13 15:49:03 · answer #1 · answered by Anonymous · 0⤊ 0⤋
28) 8 10's and 4 5's 8(10)+4(5)=x
80 + 20 = x
100 = x tada
2007-02-13 15:50:37 · answer #2 · answered by Ross 3 · 0⤊ 0⤋
JUST GRAPH THE FIRST ONE
y = -3x + 6
y = 3x
the first is a line with a slope of -3 and a y intercept of 6
the second one is a line with slope 3 and a y intercept of 0
2007-02-13 15:44:40 · answer #3 · answered by Jay S 2 · 0⤊ 0⤋
28)
5x + 10y = 100
x + y = 12
Solve that for x and y.
2007-02-13 15:45:36 · answer #4 · answered by ⊂( ﾟ ヮﾟ)⊃ 4 · 0⤊ 0⤋