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Mariulka [41]
3 years ago
9

Solve the system using elimination. 4x + 7y = 39 6x - 7y = - 29 The solution is

Mathematics
1 answer:
Inessa [10]3 years ago
7 0

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

( 4x + 7y = 39 )

Answer:

x = −7 / 4y + 39 / 4

y = −4 / 7x + 39 /7

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

( 6x - 7y = - 29 )

Answer:

x = 7 / 6y + −29 / 6

y = 6 / 7x + 29 / 7

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

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Carter got the following scores on science tests: 90, 82, 88, 78, 93 What is the mean absolute deviation? A. 4.96 B. 12.00 C. 86
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now we find the absolute value of the difference of the data points and the mean

90 - 86.2 = 3.8....| 3.8 | = 3.8
82 - 86.2 = -4.2...| -4.2 | = 4.2
88 - 86.2 = 1.8....| 1.8 | = 1.8
78 - 86.2 = -8.2   | -8.2| = 8.2
93 - 86.2 = 6.8....| 6.8| = 6.8

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4 years ago
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