nevecronin
26.06.2019 •
Mathematics
Solve system of equations y=2x-4 y=-x+5
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Ответ:
Solution (3, 2)
Step-by-step explanation:
y=2x-4
y=-x+5
Using substitution
2x - 4 = -x + 5
3x = 9
x = 3
Substitute x = 3 into y=-x+5
y= -3 +5
y = 2
Solution (3, 2)
Ответ:
$139.23
Step-by-step explanation:
50% off the original price of $239.99
= $239.99-(0.5*239.99)
= 239.99-119.995
= $119.995
She purchase a pair of shoes also worth $34.70
Total cost now= $119.995 + $34.70
Total cost now= $154.695
But she has a coupon that gives her 10% off her total sales
Now she wants pay
= $154.695 - 0.1(154.695)
= $154.695-15.4695
= $139.2255
Approximately $139.23