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Nadya [2.5K]
3 years ago
5

3(2−4)=−30 step by step

Mathematics
1 answer:
Margarita [4]3 years ago
6 0
3•2-3•4
6-12=-30
-6=-30
false
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Solve the following equation for x<br><br> 5(x - 1) = -45
abruzzese [7]

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An open rectangular box is 4 feet long and has a surface area of 20 square feet. Find the dimensions of the box for which the vo
sweet-ann [11.9K]
SA=2H(L+W)+LW for open box
20=2H(4+W)+4(W)
distribute
20=8H+2WH+4W
divide both sides by 2
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solve for 1 variable, pick W
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10-4H=W(H+2)
(10-4H)/(H+2)=W

V=LWH
subsitute 4 for V, subsitute H for H and (10-4H)/(H+2) for W
V=(4)(H)(10-4H)/(H+2)
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V'=-16(H²+4H-5)/((H+2)²)
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the dimeionts are

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width=2ft
height=1ft
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4 years ago
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