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2 years ago

What is the value of x in this proportion?

Mathematics

1 answer:

astra-53 [7]2 years ago

6 0

Answer:

(a) x=−20 1/2

Step-by-step explanation:

Multiply by the product of the denominators and solve the resulting linear equation in the usual way.

$\dfrac{2}{7}=\dfrac{-5}{x+3}\\\\2(x+3)=-5(7)\qquad\text{multiply by $7(x+3)$}\\\\2x+6=-35\qquad\text{simplify}\\\\2x=-41\qquad\text{subtract 6}\\\\\boxed{x=-20\dfrac{1}{2}}\qquad\text{divide by 2}$

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Step-by-step explanation:

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Norma-Jean [14]

From the table, we can observe that the formula for the total cost of item is

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From the data in the table, cost of item 6.00 has the input incorrect because the sum of the cost of its item and tax on the item is,

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1 year ago

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Troyanec [42]

$\qquad \qquad \rm \large \dag \: Answer \: \dag$

We have been given a Quadratic equation, where we have to find the real values of x ~

So, let's proceed with middle term splitting method :

$\qquad \sf \dashrightarrow \: {x}^{2} + 5x - 6 = 0$

$\qquad \sf \dashrightarrow \: x {}^{2} + 6x - x - 6 = 0$

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Answer:

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Step-by-step explanation:

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