1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Oxana [17]
3 years ago
13

Which of the following best describes the

Mathematics
2 answers:
ehidna [41]3 years ago
3 0
k:6x-14y=-28\ \ \ \ |subtract\ 6x\ from\ both\ sides\\\\-14y=-6x-28\ \ \ \ \ \ |divide\ both\ sides\ by\ (-14)\\\\y=\frac{-6}{-14}x-\frac{28}{-14}\\\\y=\frac{3}{7}x+2\\----------------------------\\l:3y-7x=-14\ \ \ \ \ |add\ 7x\ to\ both\ sides\\\\3y=7x-14\ \ \ \ \ \ |divide\ both\ sides\ by\ 3\\\\y=\frac{7}{3}x-\frac{14}{3}

Two\ lines\ are\ perpendicular\ if\ product\ of\ the\ slopes\ is\ equal\ -1.\\\\k:y=\frac{3}{7}x+2\to the\ skolpe\ m_k=\frac{3}{7}\\\\l:y=\frac{7}{3}x-\frac{14}{3}\to the\ slope\ m_l=\frac{7}{3}\\\\m_k\times m_l=\frac{3}{7}\times\frac{7}{3}=1\neq-1\\\\conclusion:the\ lines\ are\ not\ perpendicular\\\\Two\ lines\ are\ parallel\ if\ the\ slopes\ are\ equal.\\\\m_k=\frac{3}{7};\ m_l=\frac{7}{3}\to m_k\neq m_l\\\\conclusion:the\ lines\ are\ not\ parallel


Answer:\boxed{C-The\ lines\ intersect\ but\ are\ not\ perpendicular.}
Sauron [17]3 years ago
3 0
First, you want to find out what the slope and the y-intercept is, you must put both equations in y=mx+b from.

<em>6x − 14y = −28</em>                    :First, subtract the 6x over to the right
<u>-6x</u>                   <u>-6x</u>

<u>(</u><em>-14y = -6x - 28</em><u>)</u> <u>÷ -14</u>         :Then, divide the whole equation by -14

<em>y = 6/14x + 2</em>                        :Now, reduce the fraction, divide both the top and the                                                 bottom by 2

<em>y = 3/7x + 2</em>
<span>
3y − 7x = −14                      :First, add the 7x over to the right side
</span>      +7x          +7x

(3y = 7x - 14) ÷ 3                 :Next, divide the whole equation by 3

<em>y = 7/3x - 14/3
</em>


y = 3/7x + 2             slope: 3/7     y-int.: 2

y = 7/3x - 14/3         slope: 7/3     y-int.: -14/3 or -4 7/10 or -4.7

C.  Your answer is C.  They will eventually intersect, but not at a right angle.
You might be interested in
WILL GIVE BRAINLIEST!
Zielflug [23.3K]

Answer:

Collisions

Follow Newton’s Third Law which tells us that

the force exerted by body A on body B in a

collision is equal and opposite to the force

exerted on body B by body A.

During a collision, external forces are ignored.

The time frame of the collision is very short.

The forces are impulsive forces (high force, short

duration).

Collision Types

Elastic: P is conserved, K is conserved

Inelastic: P is conserved, K is NOT conserved

Perfectly Inelastic means the bodies stick together

Problem: Collisions (1993)

10. Which of the following is true when an object of

mass m moving on a horizontal frictionless surface

hits and sticks to an object of mass M > m, which is

initially at rest on the surface?

(A) The collision is elastic.

(B) All of the initial kinetic energy of the less-massive

object is lost.

(C) The momentum of the objects that are stuck together

has a smaller magnitude than the initial momentum of

the less-massive object.

(D) The speed of the objects that are stuck together

will be less than the initial speed of the less-massive

object.

(E) The direction of motion of the objects that are stuck

together depends on whether the hit is a head-on

collision.

Explain your reasoning:

Ans. Again, by conservation of momentum, if the

mass increases, the velocity must decrease. pin = pout

Problem: Collisions (1993)

11. Two objects having the same mass travel

toward each other on a flat surface, each with a

speed of 10 meter per second relative to the

surface. The objects collide head-on and are

reported to rebound after the collision, each

with a speed of 20 meters per second relative

to the surface. Which of the following

assessments of this report is most accurate?

(A) Momentum was not conserved, therefore the report is false.

(B) If potential energy was released to the objects

during the collision, the report could be true.

(C) If the objects had different masses, the report could be true.

(D) If the surface was inclined, the report could be true.

(E) If there was no friction between the objects and the

surface, the report could be true.

Explain your reasoning:

Ans. Momentum is conserved provided that an

external force not be applied. If the objects have

potential energy stored, this could provide the force.

PLEASE MARK AS BRAINLIEST!!!!!!

7 0
3 years ago
Who ever answers this I will mark as brainliest
Pani-rosa [81]

Answer: uhhhhhh pass

Step-by-step explanation:

5 0
3 years ago
the sum of three numbers is 81. the second number is twice the first, and the third number is six more than the second. find the
ElenaW [278]

Answer:

have you tried using math-way just with no -

Step-by-step explanation:

3 0
2 years ago
Find the coordinates of the vertex
Wewaii [24]

Answer:

(2,8)

Step-by-step explanation:

4 0
3 years ago
PLEASE HELP ME ASAP! ILL GIVE YOU BRAINLEST!
Helen [10]

Answer:

13/99

Step-by-step explanation:

First convert the expression, turn 13 into 13/1: 13/1 × 1/99

Next you multiply: 13/1 × 1/99 = 13/99

4 0
2 years ago
Other questions:
  • How do you know if something is linear
    7·2 answers
  • The student council has 10 members where 5 of the members are Seniors. They need to choose a President, Vice President, Secretar
    12·1 answer
  • -(-(-)(-)(-10x))=-5 solve for x
    5·1 answer
  • The student government association at a certain college assigns a number to each student enrolled, puts the numbers in order, an
    9·1 answer
  • Parallelogram efgh has sides of length 20 inches and 14 inches as shown. Its acute angle measures 62 degrees. Find the area of e
    14·1 answer
  • ILL GIVE BRAINLIEST TO WHOEVER SOLVES IN 10 MINSSolve each absolute value equation:
    12·1 answer
  • -43/50 as a decimal number
    13·1 answer
  • Ill give brainliest please answer right i need like 3 more questions
    14·2 answers
  • Will give brainly if answer is right
    7·1 answer
  • Kyleigh put a large rectangular sticker on her notebook. The height of the sticker measures 12 centimeters. The base is half as
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!