The answer is x= 2, y = 6
Solve for y in the second equation, so you have y= -3x + 12. Now plug that in for y in the first equation: 5x + 3( -3x +12) = 28.
Now simplify: 5x + -9x + 36 = 28: -4x = -8; so x = 2.
Now plug x=2 into either equation to solve for y:
3(2) + y = 12; 6 + y = 12; so y = 6
Answer:
216 possible outcomes
Step-by-step explanation:
Answer:
6
Step-by-step explanation:
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Answer:
x < 2.5
Step-by-step explanation:
Allen has already run 3 hours and will run x amount more to finish. This is 3+x. He must finish under or less than 5.5 hours. So 3 + x < 5.5. You solve and find x < 2.5.
Answer:
8
Step-by-step explanation:
The greatest common divisor or highest common factor can be found by considering the factors of the 3 numbers
factors of 8 are 1, 2, 4, 8
factors of 16 are 1, 2, 4, 8, 16
factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24
The common factors are 1, 2, 4, 8
the greatest common factor is 8
Thus the greatest common divisor of 8, 16 and 24 is 8
