All categories

3 years ago

√9pr / (pr)^-3/2 = A. √3pr B. 3/pr C. 3√pr D. 3pr E. 3p²r²

Mathematics

2 answers:

4vir4ik [10]3 years ago

7 0

Answer:

Step-by-step explanation:

=√9pr / (pr)^-3/2

=3√(pr) × (pr)^3/2

= 3p²r²

Anvisha [2.4K]3 years ago

4 0

Answer:

E. 3p²r²

Step-by-step explanation:

√9pr / (pr)^-3/2=

3(pr)^1/2*(pr)^3/2=

3(pr)^(1/2+3/2)=

3(pr)^2=3p^2r^2

You might be interested in

El exceso de un número sobre 20 es igual a las tres cuartas partes del mismo número. ¿Cuál es el número?

Dennis_Churaev [7]

Answer:

The number is 80

Step-by-step explanation:

The question in English is

The excess of one number over 20 equals three quarters of the same number. What is the number?

Let

x ------> the number

we know that

The linear equation that represent this situation is

$x-20=\frac{3}{4}x$

Solve for x

$x-\frac{3}{4}x=20$

$\frac{1}{4}x=20$

$x=80$

therefore

The number is 80

4 0

3 years ago

Jimmy can oil the lanes in a bowling alley in eight hours. Perry can oil the same lanes in nine hours. How long would it take th

Furkat [3]

Answer:

It would take $4\frac{4}{17}$ or <u>4.24 hours</u> to oil the lanes if they work together.

Step-by-step explanation:

Given:

Time to oil the lanes by Jimmy alone = 8 hours

Time to oil the lanes by Perry alone = 9 hours

Now, let the time taken by both working together be 'x' hours.

Part of the work done in 1 hour by Jimmy alone = $\frac{1}{8}$

Part of the work done in 1 hour by Perry alone = $\frac{1}{9}$

Part of the work done in 1 hour by Jimmy+Perry together = $\frac{1}{x}$

Now, total work in 1 hour is given as:

$\frac{1}{8}+\frac{1}{9}=\frac{1}{x}\\\\\frac{1\times 9}{8\times 9}+\frac{1\times 8}{8\times 9}=\frac{1}{x}\\\\\frac{9+8}{72}=\frac{1}{x}\\\\\frac{17}{72}=\frac{1}{x}\\\\\textrm{Doing cross product, we get:}\\\\17x=72\\\\x=\frac{72}{17}=4\frac{4}{17}\ hours$

Therefore, it would take $4\frac{4}{17}$ or 4.24 hours to oil the lanes if they work together.

6 0

3 years ago

Which statement is true?

ale4655 [162]

the correct answer is A

3 0

3 years ago

A rectangle has a legnth of 12 inches less than 6 times its width. If the area of the rectangle is 3744 square inches, find the

elena-14-01-66 [18.8K]

Length = 6x - 12

Width = x

Area of a rectangle:

A = length x width

3744 = (x)(6x - 12)

3744 = 6x^2 - 12x

6x^2 - 12x - 3744 = 0

Use the quadratic equation to solve for x. The two solutions end up being 26 and -24. Since length is a scalar measurement, it can only be positive. Thus, the value of x is equal to 26 inches.

Width = 26 inches

Length = 6(26) - 12 = 144 inches

Hope this helps!! :)

6 0

2 years ago

What is the sum 10 + (-10)

Marta_Voda [28]

Answer:

Step-by-step explanation:

because

k c r

10 + (-10)

10 - 10=0

8 0

2 years ago

Read 2 more answers