Which pair of lines are perpendicular to one another ?

Mathematics

1 answer:

Ronch [10]2 years ago

8 0

Lines are perpendicular to each other when their slopes are of the opposite parity (plus or minus) and the reciprocal of each other. I will check the answer that you have given. Already, in one of the equations, (y - 3 = 4/7x)we can see the slope. Now we just need to find the slope in 7x+4y=20. We can do this by isolating y and then getting y by itself. Doing this, we get:

4y = -7x + 20
y = -7/4x + 5

Since we can see that the slopes of the two lines multiply to negative one, then you are right, the two lines are parallel.

You might be interested in

Find the value of X. Then find the measure of each labeled angle.

wariber [46]

Both angles WILL have the same measure.

So,

3x-10= x+40 (you have to set the equations equal to one another)

Now, add 10 to both sides.

3x=x+50

Subtract x on both sides.

2x=50

Divide both sides by 2.

x=25

Now, plug in x.

(25 +40)= 65

(3(25)-10)= 65

x equals 25 and both angles are equal to 65. Or "B".

I hope this helps!
~cupcake

5 0

2 years ago

What is the monomial if a square of a monomial is:1 9/16 a12b6

san4es73 [151]

Answer:

$1\dfrac{1}{4}a^6b^3$