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3 years ago

Help me with my work show work pls

Mathematics

2 answers:

stira [4]3 years ago

7 0

42 sjdjhenrnskisudnndnjsjdhend

Rufina [12.5K]3 years ago

7 0

108 divided by 4 because x is multiplying to get 108 in this case 108 divided by 4= 27. Hope this helps!

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What is the following sum? Assume x > 0 and y > 0 sqrt x^2y^2+2 sqrt x^3y^4+xy sqrt y

Gwar [14]

Answer:

$xy(1+2y\sqrt{x}+\sqrt{y})$

Step-by-step explanation:

Given expression,

$\sqrt{x^2y^2}+2\sqrt{x^3y^4}+xy\sqrt{y}$

$=(x^2y^2)^\frac{1}{2} + 2(x^3y^4)^\frac{1}{2} + xy\sqrt{y}$

$\because (\sqrt{x}=x^\frac{1}{2})$

$=(x^2)^\frac{1}{2} (y^2)^\frac{1}{2} + 2(x^3)^\frac{1}{2} (y^4)^\frac{1}{2} + xy\sqrt{y}$

$(\because (ab)^n=a^n b^n)$

$=x^{2\times \frac{1}{2}} y^{2\times \frac{1}{2}} + 2(x^{3\times \frac{1}{2}})(y^{4\times \frac{1}{2}})+xy\sqrt{y}$

$\because (a^n)^m=a^{mn}$

$=x^1 y^1 + 2x^{1\frac{1}{2}} y^2 + xy\sqrt{y}$

$=xy+2x.(x)^\frac{1}{2} y^2 + xy\sqrt{y}$

$=xy+2xy^2\sqrt{x}+xy\sqrt{y}$

$=xy(1+2y\sqrt{x}+\sqrt{y})$

8 0

3 years ago

Read 2 more answers

9x + 4y = 7 6x - 4y = 2

koban [17]

I used the elimination method:

Multiply 9x+4y=7 by 2: 18x+8y=14
Multiply 6x-4y=2 by 3: 18x-12y=6

{18x+8y=14}
{18x-12y= 6}

18x-12y=6
-
18x+8y=14
_____________
-20y= -8

{18x + 8y = 14}
{-20y= -8}

Isolate y
y= 2/5 For 18x+8y=14 plug in y=2/5
Sovle 18x+8(2/5)=14 for x: x=3/5

THE SOLUTIONS FOR THE SYSTEMS OF EQUATIONS ARE:
y= 2/5, x=3/5

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Dmitriy789 [7]

Answer:

Yes! C=10+35h is correct!

Step-by-step explanation:

Yes, equation is correct!

$10 is fixed one time fee.$35 is hourly pay.

So, if she needs tutor for 'h' hours, the variable cost is $35h

So, total cost C =10+35h

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