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3 years ago

Which pair of lines are perpendicular to one another ?

Mathematics

1 answer:

Ronch [10]3 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.

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Anyone listens to Texako, Summrs, Ect ?

LenKa [72]

Answer:

No, but i would like to know who they are

Step-by-step explanation:

4 0

1 year ago

Find p(0),p(1),p(-1) and p(2) of the 3x(x-2)

Effectus [21]

Answer:

make x→0

$p(0)=(0)^{2}-3(0)+2$

→ $p(0)=0+0+2$

→ $p(0)=2$

$------$

Replace x→-1

$p(-1)=(-1) ^{2} -3 (-1)+2$

→ $p(-1)=1-3+2$

→ $p(-1)=0$

$----------$

Now make x→2

$p(2)=(2) ^{2} -3(2)+2$

→ $p(2)=4-6+2$

→ $p(2)=0$

$Answer:-2,0,0$

$-----------$

hope it helps...

have a great day!!

5 0

2 years ago

IM HOMESCHOOLED AND I NEED SOME HELP WITH THIS QUESTION. ANYONE PLEASE HELP. my teacher won’t help me :(

gtnhenbr [62]

Answer:

GI = 18; GE = 12; IE = 6

Step-by-step explanation:

The key to the question is to realize or find out what a centroid is and what it does. You can solve this question by knowing three things.

The centroid is the meeting point of the three medians ( a median is a line that connects the midpoint of the side opposite a given vertex).
The centroid divides the median in a ratio of 2:1. The longest segment is from the vertex to the centroid.
The shortest segment is from the centroid to the midpoint of the side opposite the given vertex.

Point two is what you have to focus on.

GE/EI = 2/1

GE = 12 Given

Solution

GE / EI = 2/1 Substitute for the given

12 / EI = 2/1 Cross multiply

2*EI = 12 * 1 Simplify the right

2 * EI = 12 Divide by 2

EI = 12/2 Divide

Part Two

GI = EI + GE

GI = 6 + 12

GI = 18

EI = 6

4 0

3 years ago

Heidi's hair was 2/3 of a meter long. her grandfather cut off 1/6 of a meter of her hair. how long is heidi's hair now?

Fittoniya [83]

The answer to this is 1/2 of a meter long.

3 0

3 years ago

Can someone explain this

hodyreva [135]

Answer:

x² = V19²-10²

= V361-100

= V261

x = 16.2

3 0

2 years ago