3 years ago

The second step in solving 1/3n- 7/12 is to divide both sides of the equation by 1/3.

Mathematics

1 answer:

alukav5142 [94]3 years ago

6 0

that is true if that's 1/3n=7/12

if it's 1/3n-7/12 then the first step is to equal it to zero

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X varies directly with Y and Z. x = 40 when y = 10 and Z = 20. find X when y = 30 and Z = 40.

sp2606 [1]

Answer:

x = 60

Step-by-step explanation:

Direct variation is of the form

y= kxz

We know x =40 and y =10 and z= 20

10 = k * 40 * 20

10 = k * 800

Divide each side by 800

10/800 = k

1/80 = k

The equation becomes

y = 1/80 xz

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