$\dfrac{x-1}{x}=5\ \ \ \ /x\neq0\\\\\dfrac{x-1}{x}=\dfrac{5}{1}\ \ \ \ |\text{cross multiply}\\\\5x=x-1\ \ \ \ |-x\\\\5x=1\ \ \ \ |:5\\\\x=0.2\\\\\dfrac{x^3+1}{x^3}=\dfrac{x^3}{x^3}+\dfrac{1}{x^3}=1+\dfrac{1}{x^3}\to1+\dfrac{1}{0.2^3}=1+\dfrac{1}{0.008}\\\\=1+\dfrac{1}{\frac{8}{1,000}}=1+\dfrac{1,000}{8}=1+125=126\\\\\text{Answer:}\ \dfrac{x^3+1}{x^3}=126$

5 0

3 years ago

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Please help on 7 to be marked the brainliest

sweet [91]

Answer:

D) 3.57%

Step-by-step explanation:

The percentage change is given by ...

percent change = ((new value) -(old value))/(old value) × 100%

= (3.19 -3.08)/3.08 × 100% = 0.11/3.08 × 100% = (11/3.08)% ≈ 3.57%

When dealing with percentages, you need to be clear about what number represents 100%, the reference value against which errors or changes are measured. Here, it is the π of the mug, 3.08.

7 0

2 years ago

it’s sad when I help people because they can’t do the same thing for me pls just for once answer this pls :(((((((

yKpoI14uk [10]

Answer:

Step-by-step explanation:

It compares two values.

Hope this helps!

3 0

2 years ago

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