We can just plug in the values of x = 2 and y = 4 into the expression 4x+y to get 4*2 + 4 = 8 + 4 = 12.
for 2y-x = 2*4 - 2 = 8 - 2 = 6
Total units of ratio = 1+4+5 = 10
Value of 1 unit = 180/10 = 18
It would be 1(18), 4(18), 5(18) = 18, 72 & 90
-0.75k-2 that would be simplifying
It should be like this: 7/2h-3(5h-1/2)
7/2h-15h+3/2
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| -23/2+3/2|
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so I think A and B are correct.
Answer:
56
Step-by-step explanation:
2a^2b+5ab-4
substitute a & b:
2(-4)^2(5)+5(-4)(5)-4
2(16)(5)+5(-4)(5)-4
160-100-4=56