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3 years ago

2.5 ( 6 x - 4 ) = 10 + 4 ( 1.5 + 0.5 x )

Mathematics

1 answer:

Makovka662 [10]3 years ago

4 0

Answer:

$\bold{x=2}$

Step By Step Explanation:

Expand $\bold{2.5\left(6x-4\right): \ 15x-10}$

Expand $\bold{10+4\left(1.5+0.5x\right): \ 2x+16}$

$\bold{15x-10=2x+16}$

Add 10 To Both Sides

$\bold{15x-10+10=2x+16+10}$

Simplify

$\bold{15x=2x+26}$

Subtract 2x From Both Sides

$\bold{15x-2x=2x+26-2x}$

Simplify

$\bold{13x=26}$

Divide Both Sides By 13

$\bold{\frac{13x}{13}=\frac{26}{13}}$

Simplify

$\bold{x=2}$

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on tuesday, 3 balls were chosen at random and we need to calculate the probability that none of them has never been used .

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probability of ball that none of the 3 pen has never being used on tuesday = 1 - probability that 3 of the pens has been used on tuesday.

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by slotting in the parameters, we have that

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