noeminm105
07.07.2019 •
Mathematics
Hello can you me ? ) answer question 3 and 7
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Ответ:
3.
1h - $50
xh - x · $50
f(x) = 50x
x = 6 → f(6) = (50)(6) = 300
$300.
7.
1DVD - $17.75
xDVD - x · 17.75
f(x) = 17.75x
x = 5 → f(5) = (17.75)(5) = 88.75
$88.75
Ответ:
20°
Step-by-step explanation:
(5x+2) = [3(x+14)]
5x+2 = 3x+42
-2 -3x
2x = 40
Divide by 2 on both sides
x = 20