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3 years ago

Line A is perpendicular to Line B. If the slope of A is -1/7, what is the slope of Line B?

Mathematics

1 answer:

Arlecino [84]3 years ago

7 0

Answer:

m = 7

Step-by-step explanation:

Perpendicular slopes are negative reciprocals so:

m of A = -1/7

m of B = 7

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3 years ago

a wire of length 200 cm is cut into two parts and each part is bent to form a square.If the area of the larger square is 9 times

diamong [38]

Answer:

The perimeter of the larger square is $150cm.$

Step-by-step explanation:

First of all, let one part of it be " $x$ "

and the other part of it " $200-x$ "

Now to solve this :

The area of the square = $L^2$

The area of one part of the square = $x^2$

The area of the other part of the square = $(200-x)^2$

$9x^2= (200-x)^2\\9x^2=40000-400x+x^2$

Now, add, $-4x^2$ to both the sides :

$9x^2-9x^2=40000-400x+x^2-9x^2\\-1(8x^2+400x-40000)=0$

Now, take out the "8" which is common :

$-8(x^2+50x-5000)=0$

Now, divide it by $-8$ :

$x^2+100x-50x-5000=0\\x(x+100)-50(x+100)=0\\(x+100)(x-50)=0\\$

$x=-100$ or $50$

So, now we know that :

One of the part is = $50cm$

And the other part is = $150cm$

Thus the perimeter of the larger square is = $150cm$

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Step-by-step explanation:

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2 digit meaning that it has 2 numbers. For example, 66 is a two digit number.
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Also, it must be odd.

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Answer: 21

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3 years ago

Read 2 more answers

Line A is perpendicular to Line B. If the slope of A is -1/7, what is the slope of Line B?￼

Line A is perpendicular to Line B. If the slope of A is -1/7, what is the slope of Line B?