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Montano1993 [528]

3 years ago

14

Is this answer correct?

1 answer:

IrinaVladis [17]3 years ago

5 0

Answer:

if i am incorrect please report my answer but im pretty sure that you are correct. have a nice day

Step-by-step explanation:

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Which expression is equivalent to sqrt8x^7y^8? assume x>0

Ilia_Sergeevich [38]

Answer:

$\sqrt{8x^7y^8$ $= 2x^3y^4 * \sqrt{2x}$

Step-by-step explanation:

Given

$\sqrt{8x^7y^8$

Required

Evaluate

$\sqrt{8x^7y^8$

Separate each factor with multiplication sign

$\sqrt{8*x^7*y^8$

Express 8 as 4 * 2 and $x^7$ as $x^6 * x$

$\sqrt{4 * 2 *x^6 * x*y^8$

Split each factor

$\sqrt{4} * \sqrt{2} *\sqrt{x^6} * \sqrt{x}*\sqrt{y^8}$

Evaluate $\sqrt4$

$2 * \sqrt{2} *\sqrt{x^6} * \sqrt{x}*\sqrt{y^8}$

Apply law of indices:

$2 * \sqrt{2} * x^{6*\frac{1}{2}} * \sqrt{x} * y^{8*\frac{1}{2}}$

$2 * \sqrt{2} * x^3 * \sqrt{x} * y^4$

Reorder

$2* x^3 * y^4 * \sqrt{2} * \sqrt{x}$

$2x^3y^4 * \sqrt{2} * \sqrt{x}$

$2x^3y^4 * \sqrt{2*x}$

$2x^3y^4 * \sqrt{2x}$

$2x^3y^4 \sqrt {2x$

Hence:

$\sqrt{8x^7y^8$ $= 2x^3y^4 * \sqrt{2x}$

8 0

3 years ago

Read 2 more answers

Sam can mow a lawn in 30 minutes. Rocky can mow the same lawn in 90 minutes. How long does it take for both Sam and Rocky to mow

Anvisha [2.4K]

Answer:

$\frac{45}{2} \ minutes$

Step-by-step explanation:

Given:

Sam can mow a lawn in 30 minutes.

Rocky can mow the same lawn in 90 minutes.

Question asked:

How long does it take for both Sam and Rocky to mow the lawn if they are working together?

Solution:

By unitary method:

<u>For Sam</u>

Sam can mow in 30 minutes = 1 lawn

Sam can mow in 1 minute = $\frac{1}{30}\ lawn$

<u>For Rocky</u>

Rocky can mow in 90 minutes = 1 lawn

Rocky can mow in 1 minutes = $\frac{1}{90} \ lawn$

In a case of working together:

In 1 minute, both will mow = $\frac{1}{30}\ lawn$ + $\frac{1}{90} \ lawn$

= $\frac{3+1}{90} = \frac{4}{90} \ lawn$

To mow $\frac{4}{90} \ lawn$ together, it takes = 1 minute

So, to mow 1 lawn together, it takes = $\frac{1}{\frac{4}{90} } =\frac{90}{4} =\frac{45}{2} \ minutes$

Thus, both Sam and Rocky will mow the lawn together in $\frac{45}{2} \ minutes$

5 0

3 years ago

Transform the equation to isolate x ax = br + 1. How is

Sonja [21]

Answer:

x = (br + 1)/a

Step-by-step explanation:

Simply divide both sides by <em>a</em> to get our answer.

6 0

2 years ago

Can you please help with fractions

schepotkina [342]

The answer to number one is 728

8 0

3 years ago

Describe how to transform the graph of f into the graph of g. (1 point)<br> f(x) = x4 and g(x) = -x4

MrRissso [65]

F(x) → -f(x)

Reflected across the x-axis.
Look at the picture.

5 0

3 years ago