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3 years ago

13. The figure below shows three identical squares ABCD, CEFG and CJIH

Mathematics

1 answer:

Maru [420]3 years ago

7 0

Step-by-step explanation:

DCE²+GCH²+X²=180°

40²+27²+X²=180°

x²=2329-180°

x=√2149

x=49//

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The graphs of the two lines 4x=3y+23 and 4y+3x=-19

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Answer: D. Are perpendicular

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matrenka [14]

Answer: Yes

Step-by-step explanation:

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3 years ago

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dangina [55]

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3 years ago

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10 yd 5 yd 7 yd 2 yd Perimeter: Area:

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Answer:

p= 24

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Step-by-step explanation:

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2 years ago

An electricity company charges its customers a fixed base charge of $6 a month, plus 10 cents per kilowatt-hour (kWh) for the fi

ryzh [129]

Answer:

$E(k)= \left[ \begin{array}{c} {6+0.10k\,\,if\,\,0\leq k \leq500} & 6+500\times0.10+0.11(k-500)\,\,if\,\,5001000\end{array}$

Step-by-step explanation:

The cost function has 3 branches,

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consumptions above a 1000

So the first branch the consumer pays 6 dollars plus .10cents for any additional kWh (k)

In the second, they pay the same as the first up to 500kWh, and after that they pay 0.11 for the additional kWh above 500: (k-500) but bellow 1000

In the third branch, for consumptions above 1000, they pay the fix amount, plus .10 for the first 500 ( $500\times0.10$ ) , .11 for the additional 500 ( $500\times0.11$ ) , and finally 0.15 for consumptions above 1000: $0.15(k-1000)$

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3 years ago