Answer:
x = -37/30
Step-by-step explanation:
Eliminate parentheses using the distributive property:
-30x +20 = 57
Subtract 20 to get the x-term by itself:
-30x = 37
Divide by -30 to get 1x:
x = -37/30
Answer:
13, 17, 19
Step-by-step explanation:
Go through (12-20) and find the multipliers for each number.
13 = 13 x 1
14 = 7 x 2 , 14 x1 = no
15 = 5 x 3, 15 x 1 = no
17 = 17 x 1
18 = 6 x 3, 9 x 2, 18 x 1 = no
19 = 19 x 1
Answer: Found it by web and solving
Step-by-step explanation: L = W + 4
LW = 60
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LW = 60
(W + 4)W = 60
W^2 + 4W + (-60) = 0
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above is in quadratic equation form: ax^2 + bx + c = 0
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use the quadratic formula to solve for two solutions:
x = ( -b +- sqrt( bb - 4ac ) ) / 2a
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the two solutions are:
W = 6
W = -10
the negative solution doesn't make sense for length, so use the positive solution.
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L = 10
W = 6
Im assuming you just want to take out common multiples so,
30d+18 is also the same as 6(5d+3)
The answer is 14. I divided 42 by 3 and then times that answer by 1.
