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3 years ago

What's the difference between Direct and Inverse Proportion? Please explain

Mathematics

2 answers:

Marat540 [252]3 years ago

7 0

Answer:

Step-by-step explanation:

The answer is that with direct variation, the value and the quantity changes and goes according, either lower or higher, but with inverse variation, the value can go higher, and the quantity can go lower, and the quantity can go higher, but the value can be lower.

natulia [17]3 years ago

6 0

Answer: Direct means when x goes up y also goes up, inverse means when x goes up, y goes down and vice versa.

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Starting at (0,0) if you were to go up 7 units and left 4 what coordinates would you end up at? What quadrant would you be in

Alex787 [66]

Answer:

(-4,7) and the 2nd quadrant

Step-by-step explanation:

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3 years ago

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The length of a rectangle is 20 units more than its width. The area of the rectangle is x4−100.

Mice21 [21]

Answer:

$1. x^2-10$ because the area expression can be rewritten as $(x^2-10)(x^2+10)$ which equals $(x^2-10)((x^2-10)+20).$

Step-by-step explanation:

Area of the rectangle $=(x^4-100)$

$x^4-100=(x^2)^2-10^2\\$Applying difference of two squares: a^2-b^2=(a-b)(a+b)\\(x^2)^2-10^2=(x^2-10)(x^2+10)$

Since the length of a rectangle is 20 units more than its width.

$Width: x^2-10\\Length=x^2+10=x^2-10+20$

The correct option is therefore 1.

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4 years ago

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I am Lyosha [343]

First you have to find the angle B (check attachment)

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Now you can find angle A

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SOLVING SYSTEMS OF EQUATIONS BY SUBSTITUTION.<br><br> 1. 2x+3y=1<br> -3x+y=15

ohaa [14]

$2x+3y=1 \\
-3x+y=15 \\ \\
\hbox{from the 2nd equation:} \\
-3x+y=15 \\
y=15+3x \\ \\
\hbox{substitute 15+3x for y in the 1st equation:} \\
2x+3(15+3x)=1 \\
2x+45+9x=1 \\
9x+2x=1-45 \\
11x=-44 \\
x=-4 \\ \\
\hbox{solve one of the equations for y}: \\
2x+3y=1 \\
2 \cdot (-4) + 3y=1 \\
-8+3y=1 \\
3y=1+8 \\
3y=9 \\
y=3 \\ \\
\hbox{the answer:} \\
x=-4 \\
y=3$

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3 years ago

What's the difference between Direct and Inverse Proportion? Please explain ​

What's the difference between Direct and Inverse Proportion? Please explain