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kvasek [131]
3 years ago
8

Are lines GH and G'H' perpendicular? Why or why not? Yes, they intersect at one point. Yes, their slopes are negative reciprocal

s. No, their slopes are not negative reciprocals. No, their slopes are not equal.
Mathematics
1 answer:
Solnce55 [7]3 years ago
3 0

Answer:

Step-by-step explanation:

B yes their slopes are negative reciprocals

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What is the sum of all of the four-digit positive integers that can be written with the digits 1, 2, 3 and 4 if each digit must
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Answer with explanation:

Number of four digit numbers using four distinct digit

         =Unit placed can be filled in four ways * Tens place can be filled in Three ways * Hundreds place can be filled in 2 ways * Thousand Place can be filled in a single way

=4*3*2*1

=24 distinct numbers

Sum of all four , four digits numbers using 1,2,3,4

          = (If we keep 4 at unit place +Keeping 3 at unit place +Keeping 2 at unit place+Keeping 1 at unit place)×6+At tens place (2*2+3*2+1*2+4*2+2*2+1*2+1*2+3*2+4*2+2*2+3*2+4*2)+At hundred's place (2*2+3*2+1*2+4*2+2*2+1*2+1*2+3*2+4*2+2*2+3*2+4*2)+At thousand's Place(2*2+3*2+1*2+4*2+2*2+1*2+1*2+3*2+4*2+2*2+3*2+4*2)

=(24+18+12+6)Unit place+(60)Ten's place +(60)Hundred's place+(60)Thousand's Place

=66660

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3 years ago
Evaluate expression 2 (d +9)
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Answer:

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Step-by-step explanation:

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2 years ago
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Answer:

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Answer:

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