Answer:
x = -2
Step-by-step explanation:
Solution:
-5x - 5y = 25 -(1)
3x + 5y = -21 -(2)
Adding (1) and (2),
-5x - 5y + 3x + 5y = 25 - 21
-5x + 3x -5y + 5y = 4
-2x = 4
x = 4 / -2
Therefore, x = -2
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Answer:
40
Step-by-step explanation:
LCM
multiples of 5: 5, 10, 15, 20, 25, 30, 35, <u>40</u>
multiples of 8: 8, 16, 24, 32, <u>40</u>
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the least (smallest) number that is a multiple of both 5 and 8 is 40
Perpendicular. Only because its 2 lines that intersect one another.