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lesantik [10]
3 years ago
7

Parallel, intersecting or skew?

Mathematics
1 answer:
const2013 [10]3 years ago
7 0

Two lines are:

  • Parallel if they don't intersect and lie on the same plane
  • Intersecting if...well, they intersect at one point
  • Skew if they don't intersect and they lie on two different planes

So, we have:

  • AB and BC intersect at point B
  • AE and BF don't intersect, but both lie on the plane AEFB
  • EF and AD don't intersect and don't lie on a common plane
  • ABC and ABF intersect on segment AB
  • AED and BFC are parallel (they're both perpendicular to plane ABC)
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Simplify the expression
vagabundo [1.1K]
The answer will be 22(sqrt)6, or 53.9.
3 0
4 years ago
A jar contains four red marbles and six green marbles. You randomly select a marble from the jar, with replacement. The random v
ioda

Answer:

The probability of getting exactly two read marbles is P = 0,003456%

Step-by-step explanation:

So, each of the following sequences are the desired results(I will use R for a red marble and G for a green marble).

S(1) = R-R-G-G

S(2) = R-G-R-G

S(3) = R-G-G-R

S(4) = G-R-R-G

S(5) = G-R-G-R

S(6) = G-G-R-R

In all, considering there are replacement, there can be 10*10*10*10 = 10000 total sequences, so the probability of getting exactly two read marbles is

P = \frac{P(S(1)) + P(S(2)) + P(S(3)) + P(S(4)) + P(S(5)) + P(S(6))}{10000}

where

P(S(1)) = P(S(2)) = P(S(3)) = P(S(4)) = P(S(5)) = P(S(6)) = (0.4)^{2}*(0.6)^{2} = 0.16*0.36 = 0.0576.

The probability of getting exactly two read marbles is

P = \frac{6*0.0576}{10000} = 0,003456%

3 0
4 years ago
Is this correct? If not please give me the correct answer
jenyasd209 [6]
You're answer is correct. If you round up and estimate to the whole number it would be 9 yards. If you add the total it would 10 yards. You have at least 6 yards so a & b would be out. Then 3/4 three times would be greater then 1/2. So c would be out as well.
5 0
3 years ago
Solve this for me (geometry)
VashaNatasha [74]

Given:

A figure of a circle. KJ=6,KL=x-2,ML=4.

To find:

The length of KJ.

Solution:

From the given figure it is clear that the number 6 is marked between K and J it means the number 6 represents the distance between the points K and j.

Therefore, the length of KJ is 6 units.

Note: In the given question we need to find KL instead of KJ because KJ is already given.

According to the tangent secant theorem:

a^2=bc

Where,

  • a is the length of the tangent.
  • b is the length of the external segment of the secant.
  • c is the measure of the secant.

Using the tangent secant theorem, we get

ML^2=KL\times JL

(4)^2=(x-2)\times (6+x-2)

16=(x-2)\times (4+x)

16=4x+x^2-8-2x

On further simplification, we get

16=x^2+2x-8

0=x^2+2x-8-16

0=x^2+2x-24

Splitting the middle term, we get

x^2+6x-4x-24=0

x(x+6)-4(x+6)=0

(x+6)(x-4)=0

x=-6,4

For x=-6,

KJ=-6-2

KJ=-8, which is not possible because side cannot be negative.

For x=4,

KJ=4-2

KJ=2

Therefore, the measure of KL is 2 units.

7 0
3 years ago
Why does the person i like not talking to me :(
elixir [45]
You should try talking to them?
6 0
3 years ago
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