$Domain:\\4-x\neq0\ \wedge\ 4+x\neq0\\x\neq4\ \wedge\ x\neq-4\\\\\dfrac{4}{4-x}=\dfrac{5}{4+x}\qquad\text{cross multiply}\\\\4(4+x)=5(4-x)\qquad\text{use distributive property}\\\\(4)(4)+(4)(x)=(5)(4)+(5)(-x)\\\\16+4x=20-5x\qquad\text{subtract 16 from both sides}\\\\4x=4-5x\qquad\text{add 5x to both sides}\\\\9x=4\qquad\text{divide both sides by 9}\\\\\boxed{x=\dfrac{4}{9}}$

6 0

3 years ago

A shopkeeper had 120 kg of rice in the first four week of him and his cell 20⅓kg 10⅕kg 15½kg and 25¾kg respectively find the qua

iragen [17]

Answer:

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Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Which of the following are situations that can be modeled with a quadratic function? Select all that apply.

Lina20 [59]

Answer:

Option 2 and 5 are correct.

Step-by-step explanation:

We need to tell which one of them is quadratic function.

Option 1 is exponential decay so, it is not quadratic.

Option 2 is quadratic because the diver will take the parabolic shape when jumps.

Option 3 is not quadratic.Option 4 is not quadratic it is linear.

Option 4 is again exponential not quadratic.

Option 5 is quadratic because it takes the parabolic shape again.

4 0

3 years ago

Read 2 more answers

Evaluatethe expression (-0.3)^4. what is the value of the expression​

Evaluatethe expression (-0.3)^4. what is the value of the expression