<span>Equation:
silver + silver = silver
0.45x + 0.60(40-x) = 0.48*40
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45x + 60*40 - 60x = 48*40
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-15x = -12*40
x = (4/5)40
x = 32 lbs (amt of 45% slloy needed)
40-x = 8 lbs (amt of 60% alloy needed)</span>
5^0=1
Any exponent to zero power equals 1
Answer:
144 cm²
Step-by-step explanation:
A prism's surface has 2 triangles & 3 rectangles.
In both the triangles , length of :
Perpendicular = 4 cm
Base = 6 cm
So , Area of both triangles =
In the 3 rectangles ,
Length = 8 cm
Width = 5 cm
So , Area of the rectangles =
Hence the total surface area of the prism is = 120 + 24 =144 cm²
Answer:
x - 24 > 9
x > 33
Step-by-step explanation:
Answer:
2,160 seconds
Step-by-step explanation: