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3 years ago

Last question! I need help with showing my work! I already have the answer in the attached image below, thanks!

Mathematics

1 answer:

Rainbow [258]3 years ago

5 0

Answer:

see explanation

Step-by-step explanation:

Given

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

= $\frac{\sqrt{4x^2} }{\sqrt{3y} }$

= $\frac{2x}{\sqrt{3y} }$

Rationalise the denominator by multiplying the numerator/ denominator by $\sqrt{3y}$

Note that $\sqrt{a}$ × $\sqrt{a}$ = a

= $\frac{2x}{\sqrt{3y} }$ × $\frac{\sqrt{3y} }{\sqrt{3y} }$

= $\frac{2x\sqrt{3y} }{3y}$

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1. What is the name of the parent function for g(x)= x² + 1?

Serga [27]

It would be a parabola, or quadratic, but prolly parabola

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2 years ago

Christopher withdrew 30 United States dollars (USD) from an automatic teller machine in Germany. He received 24 euros (EUR). Whi

Gelneren [198K]

<em> 1 euro equals 1.25 dollars</em>

<h2>Explanation:</h2><h2></h2>

In this problem we know that:

Christopher withdrew 30 United States dollars (USD) from an automatic teller machine in Germany.
He received 24 euros (EUR).

So we can solve this by using unitary method:

$1EUR=\frac{30EUR}{24USD} \\ \\ \boxed{1EUR=1.25USD}$

So<em> 1 euro equals 1.25 dollars</em>

<em />

<h2>Learn more:</h2>

Converting units: brainly.com/question/8426032

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3 years ago

Jack is trying to make extra money on his summer vacation from school. He works two different jobs, earning $9 per hour washing

Sveta_85 [38]

Answer:

$57

$9w+6d$

Step-by-step explanation:

Given that:

Earnings per hour for washing cars = $9

Earnings per hour for walking dogs = $6

Number of hours for which car washing is done = $w$

Number of hours taken for walking dogs = $d$

Earnings for $w$ hours for washing cars = Per hour earnings multiplied by number of hours = $9 $w$

Earnings for $d$ hours for walking dogs = Per hour earnings multiplied by number of hours = $6 $d$

Total earnings by both = $( $9w+6d$ )

Now, given that

Number of hours spent washing cars = 5 hours

Number of hours spent walking dogs = 2 hours

Therefore, total earnings by both = 9 $\times$ 5 + 6 $\times$ 2 = <em>$57</em>

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3 years ago

joe and Eric have to ship 75 packages. Joe can do the job alone in 5 hours. if Eric helps, they get it done in 4 hours. How long

Umnica [9.8K]

Eric took 20 hours to do the job alone.

<u>Step-by-step explanation</u>:

<u>Given </u>:

Total work = 75 packages
Joe took 5 hours to complete the total work.

The amount of work Joe alone can do per hour = 75/5 = 15 packages.

The amount of work Joe and Eric together do per hour = 75/4 = 18.75

The amount of work Eric alone can do per hour = 18.75 - 15 = 3.75

The time Eric took to complete the entire work = 75 / 3.75 = 20 hours.

8 0

3 years ago

Determine whether each equation is a linear equation. Write yes or no. If yes, write the equation in standard form. y = 4x + x

DochEvi [55]

Answer:

y = 4x + x is a linear equation

Step-by-step explanation:

A linear equation has the general equation as below;

${ \bf{y = mx + k}}$

k is a constant.

• For y = 4x + x

y = 5x

m is 5 and k is 0

${ \underline{ \mathfrak{ \green{Good \: grace}} \: \:⚜ \: \: { \blue{ \mathfrak{Good \: God}}}}}$

4 0

2 years ago