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cluponka [151]
4 years ago
9

Each U.S. penny weighs 2.5 grams. How many pennies,x is how many pennies it an equation, are on scale if their total weight is 3

7.5 grams:A. 2.5+x=37.5 x=12,B. 2.5x=37.5 x=15, C. x-2.5=37.5 x=40,D. 2.5x=37.5 x=18???? please answer quick.
Mathematics
1 answer:
aleksandrvk [35]4 years ago
8 0
The equation is 37.5 = 2.5x  

then divide each side by 2.5

x = 15

letter B is your answer
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Of the 600 workers at a factory, 8.5% belong to a union. how many workers are in the union?
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NNADVOKAT [17]
Let's call the length L and the width w. 

perimeter = 2L + 2w
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the length is 6 yards longer than the width. so L = w + 6.

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3 0
3 years ago
Find the point at which the line with parametric equations x = 2 3t, y =-4t, z =5 t intersects the plane 4x 5y -2z=18
sashaice [31]

It looks like you have

\begin{cases}x=2+3t\\y=-4t\\z=5+t\end{cases}

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When t=-2, we get the point

\begin{cases}x=2+3(-2)\\y=-4(-2)\\z=5+(-2)\end{cases} \implies (x,y,z) = \boxed{(-4,8,3)}

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Answer:

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4 0
2 years ago
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