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NISA [10]
2 years ago
13

Laura can finish payroll in 3 hours. it takes ben 5 hours to do the same job. If they work together, how long should it take the

m?
Mathematics
1 answer:
rjkz [21]2 years ago
5 0

Answer:

15/8 hours .................

Step-by-step explanation:

Let L be Laura, and B be Ben. Then:

3L=1

5B=1

Next:

15L=5

15B=3

15(L+B)=5+3=8

15/8 (L+B)=1

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Answer:

so density is measured in grams per cm³

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so now you know that the given liquid is 6 grams per 24 cm³

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3 years ago
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2 years ago
Multiply 8 by 10, then subtract t from the result
faltersainse [42]

Answer:

80-t

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3 0
2 years ago
Suppose xy=4 and dy/dt=-2. Find dx/dt when x=-3
nirvana33 [79]
Dy/dx = dy/dt  *   dt/dx

xy = 4

y + x(dy/dx) = 0      by implicit differentiation. 

x(dy/dx) = -y

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<span>dy/dx = dy/dt  *   dt/dx             dy/dt = -2
</span>
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y/(2x) = dt/dx

dt/dx =  y/(2x)

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