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3 years ago

" Draw three lines with slope 2, and three lines with slope 1/3. What do you notice "

Mathematics

1 answer:

Tom [10]3 years ago

6 0

Answer:

Step-by-step explanation:

all the lines with slope 2 are parallel with each-other

all the lines with slope 1/3 are parallel with each-other

all lines have positive slope so they go upward from left to right

slope 2 is steeper then slope 1/3

the distance between the parallel lines with slope (1/3) is greater for the lines with the slope 2

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-27=-9x-18y -5y-10x-15=0

lora16 [44]

Answer:

x=-3

y=3

Step-by-step explanation:

-27=-9x-18y equation 1

-5y-10x-15=0 equation 2

using equation 2 we have:

-10x -15 =5y

y= -2x -3 equation 3

using equation 3 in equation 1 we have:

-27=-9x-18(-2x -3)

-27= -9x +36x +54

-27-54 =27x

-81 = 27x

so we have:

x= -81/27

x=-3

y= -2(-3) -3

y= 6-3

y = 3

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3 years ago

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Mice21 [21]

The second one and the last one

7 0

4 years ago

Acidity is measured on the pH scale. The acidity of a substance is given by pH=−logH, where H is the concentration of Hydrogen i

frosja888 [35]

Answer:

[H^+] = Antilog[-6]

Step-by-step explanation:

Even though the question is incomplete, let us try to correctly derive the equation used to find the hydrogen ion concentration.

pH=−log[logH^+]

-pH = log[H^+]

[H^+] = Antilog[-pH]

Since pH =6

The equation is;

[H^+] = Antilog[-6]

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Nikolay [14]

Answer:

y = 1 x - 9 ( L.C.M = 2 )

2 2

1(1x)-1(9)

x-9

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