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2 years ago

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jalil and Victoria are each asked to solve the equation ax – c = bx + d for x. Jalil says it is not possible to isolate x becaus

e each x has a different unknown coefficient. Victoria believes there is a solution, and shows Jalil her work:

2 answers:

Pie2 years ago

8 0

Answer:

$x = \frac{d+c}{a - b}$

Step-by-step explanation:

Equation: $ax – c = bx + d$

Jalil says it is not possible to isolate x because x has a different unknown coefficient.

Victoria t. Victoria believes there is a solution

Solving the equation:

$ax-c = bx + d$

$ax - bx= d+c$

$(a - b)x = d+c$

$x = \frac{d+c}{a - b}$

So, this shows x can be isolated .

Victoria was right .

It was not possible to isolate x if the coefficients of x would be same .

But in the given equation the coefficients of x are not same .

So, Victoria is right.

vladimir1956 [14]2 years ago

4 0

Answer:

Rewrite the expression on the left using the distributive property.

Step-by-step explanation:

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Part 1) $u< 5.5$

Part 2) $d > -80$

Part 3) $r < -1$

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Step-by-step explanation:

<u><em>The question is</em></u>

Solve each inequality for the indicated variable

Part 1) we have

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subtract 12 both sides

$2u< 23-12\\2u$

Divide by 2 both sides

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In a number line the solution is the shaded area at left of u=5.5 (open circle)

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Part 2) we have

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Divide by 0.1 both sides

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The solution is the interval (-80,∞)

In a number line the solution is the shaded area at right of d=-80 (open circle)

The number -80 is not included in the solution

Part 3) we have

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Remember that, when you multiply or divide both sides of an inequality by a negative number, you must reverse the inequality symbol

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The solution is the interval (-∞,-1)

In a number line the solution is the shaded area at left of r=-1.1 (open circle)

The number -1.1 is not included in the solution

Part 4) we have

$13< 2z+3$

Subtract 3 both sides

$13-3$

Divide by 2 both sides

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Rewrite

$z>5$

The solution is the interval (5,∞)

In a number line the solution is the shaded area at right of z=5 (open circle)

The number 5 is not included in the solution

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Subtract 9 both sides

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Rewrite

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The number 20 is included in the solution

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