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lara31 [8.8K]
3 years ago
10

3(5x - 2) - 6x = 3(3x + 2)

Mathematics
1 answer:
kap26 [50]3 years ago
8 0
9x-6=9x+6
9x-9x=6+6
x=12
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A regular decagon is rotated in degrees about its center carrying the decagon onto itself. the value of n could be
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PLS HELP IF YOU CAN!THIS IS DUE IN 30 MINUTES :(
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Answer:

Length: 20 or 40 feet

Width: 40 or 20 feet

Step-by-step explanation:

Area = 800 = length*width = x*(60-x)= 60x - x^2

- x^2 + 60x - 800 = 0

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Or x = 40

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2 years ago
Which equation has a graph that is perpendicular to the graph of -x + 6y = -12?
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Answer:

c) 6x + y = -52  is required equation perpendicular to the given equation.

Step-by-step explanation:

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Here m = slope of the equation.

Two equations are said to be perpendicular if the product of their respective slopes is -1.

Here, equation 1 :  -x + 6y = -12

or, 6y = -12  + x

or, y = (x/6)  - 2

⇒Slope of line 1 = (1/6)

Now, for equation 2  to be  perpendicular:

Check for each equation:

a. x + 6y = -67       ⇒  6y = -67  - x

or, y = (-x/6)  - (67/6)      ⇒Slope of line 2 = (-1/6)

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\frac{1}{6} \times (-6)  =  -1

Hence, 6x + y = -52  is required equation 2.

d. 6x - y = 52  ⇒  -y = 52  - 6x

or, y = 6x   - 52      ⇒Slope of line 2 = (6)

but \frac{1}{6} \times 6  \neq -1

Hence,  6x + y = -52  is  the  only required equation .

3 0
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From 12,000 graphing calculators produced by a​ manufacturer, an inspector selects a random sample of 550 calculators and finds
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Answer:

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Step-by-step explanation:

Using proportion,

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Answer:

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