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2 years ago

6

Help anyone. I want to be good at math

2 answers:

dybincka [34]2 years ago

5 0

Practice, practice, practice. And ask questions.

IrinaK [193]2 years ago

5 0

Keep practicing and do extra math everyday

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2 years ago

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2 years ago

Identify the solutions of the system of equations, if any<br> x+5y=6<br> 6x-10y=12

saw5 [17]

$\left \{ {{x+5y=6} \ \ |2\atop {6x-10y=12}} \right. \\\\\\ \left \{ {{2x+10y=12} \atop {6x-10y=12}} \right. \\ ======== \\\\ 8x=24 \ \ \ |:8 \\\\ \boxed{x=3} \\\\ x+5y=6 \\\\ 5y=6-x \\\\ y=\frac{6-x}{5} \\\\ y=\frac{6-3}{5} \\\\ \boxed{y=\frac{3}{5}}$

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3 years ago

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The volume of a gas in cubic centimeters v,varies inversely with the pressure of the gas in liters per square centimeters,p when

scoundrel [369]

Answer:

The volume of the gas is $145.45\ cm^{3}$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form $y*x=k$ or $y=k/x$

Let

v------> the volume of a gas in cubic centimeters

p-----> the pressure of the gas in liters per square centimeters

so

$p*v=k$

we have

$v=16\ cm^{3}, p=20\ l/cm^{2}$

substitute and solve for k

$k=16*20=320$

The equation is $p*v=320$

<em>Find the volume of the gas when the pressure is 2.2 L/cm2</em>

so

For $p=2.2\ l/cm^{2}$ Find the value of v

substitute in the equation

$(2.2)*v=320$

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2 years ago

A rectangle is twice as long as it is wide. If its area is 50 sq. yd., find the length.

sertanlavr [38]

A = L * W
A = 50
L = 2W

50 = W(2W)
50 = 2W^2
50/2 = W^2
25 = W^2
sqrt 25 = W
5 = W

L = 2W
L = 2(5)
L = 10 <==length is 10 yd

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2 years ago