3 years ago

Say you want to create a ladder .which lines should be parallel and perpendicular to each?

Mathematics

2 answers:

Alik [6]3 years ago

8 0

The two outer "strands" should be parallel and the rungs should be perpendicular to the strands.

AlladinOne [14]3 years ago

4 0

The lines going up and down would be parallel and the lines going sideways that you would put your feet on to climb up would be perpendicular

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What is the measure of DHF in circle H? <br> 270<br> 90<br> 220<br> 130

Natalka [10]

Answer: 220

Step-by-step explanation: 130 degrees + the 90 degree angle = 220 degrees

Hope this helps:)

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3 years ago

Solve by completing the square. x^2 + 4x – 1= 0

NNADVOKAT [17]

Answer:

x = -2 ± sqrt(5)

Step-by-step explanation:

x^2 + 4x – 1= 0

Add 1 to each side

x^2 + 4x – 1+1= 0+1

x^2 +4x = 1

Take the coefficient of x

Divide by 2

4/2 =2

Square it

2^2=4

Add it to each side

x^2 +4x+4=1+4

(x+2)^2 = 5

Take the square root of each side

sqrt((x+2)^2 )=± sqrt(5)

x+2 = ± sqrt(5)

Subtract 2 from each side

x+2-2 = -2 ± sqrt(5)

x = -2 ± sqrt(5)

8 0

3 years ago

If twice a number, n, is 5 less than the number squared, which of the following equations could be used to properly solve for n?

hjlf

Answer:

2n - 5 = n^2 (or n squared)

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3 years ago

Phil collected data from several of his friends about the number of hours they spent sleeping and the number of hours they spent

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Answer:

Step-by-step explanation:

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3 years ago

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Find the value of 7w-2 given that - 2w-4=6 .

Vesnalui [34]

Answer:

w= -5

Step-by-step explanation:

-2w - 4 = 6

-2w - 4 + 4 = 6 + 4
-2w = 10

Isolate "w":

$\frac{-2w}{-2} = \frac{10}{-2}$

w = -5

4 0

3 years ago