5. A fountain has two drainage valves. With the first valve open, the fountain drains completely in 6 h. With only the second valve open, the fountain drains completely in 4.25 h. About how many hours will the fountain take to drain with both valves open? Round your answer to the nearest tenth.

Q: Hi, I believe the function was not entered correctly in the transcription. It should be x^2-16/x-2.…

A: Apologies for the inconvenience. First two steps were correct in the original solution. Step 3 was…

Q: 6^2(3)+4=8 explain why the answer to this equation is incorrect. Provide the correct answer.

A: Given, The equation is 6^2(3)+4=8.

Q: solve 3(x-5)=2(x-4)

A: Distribute 3 and 2 first.

Q: Solve 2x- ( 5-x) =( ( 1-4x /2 ) + 5 )( x-2)

A:

Q: how do you turn -5x2 into cube

A: Step 1: express the factors exponentially equivalent to cube root. hence;            -5 = (-5)1/3…

Q: can you help me with rational numbers on the number line

A:

Q: Explain why it is necessary to checkthe possible solutions of a rational equation

A:

Q: What is the solution to: -2x^3+7=135

A:

Q: solve for -16x2+132X+500?

A: Given,-16x2+132x+500This is a quadratic equation, so we take-16x2+132x+500 = 0⇒6x2-132x-500 = 0

Q: 3a-5a+80a-\

A:

Q: Is the quotient of 4 divided by -8 a rational number?

A: topic - rational numbers rational number is a number that can be written in the form of p/q and q is…

Q: Explain how solving 4x<-16  is different from solving -4x<-16

A: The objective of this question is to understand the difference between solving the inequalities 4x…

Q: Evaluate -(-6)-3 . Express in rational form

A:

Power Operation

Power operation is topic of algebra in Math. It is use to represent repeated multiplication. Very big number and very small number can be easily express using power operation. Power operation is useful in many fields. In space engineering, it helps in representing the distance or size of particular heavenly body. In medical field, it is used to represent very small size. In medical field it helps to mention size of bacteria or virus. 

Exponents

The exponent or power or index of a variable/number is the number of times that variable/number is multiplied by itself.