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
Furkat [3]
3 years ago
13

Got a fairly simple looking system of equations, 2k+4y=20, and 3x+6y=30 Don't understand how to prove what values of k provide -

1 solution - no solutions - and many solutions
Mathematics
1 answer:
Leya [2.2K]3 years ago
6 0

Answer:

2kx+4y=20 ⇒ kx+2y=10

3x+6y=30 ⇒ x+2y= 10

k is the coefficient of x, so it is the slope of the line

  • when k=1, both equations will be same, then there are many solutions
  • when k=0 there is one solution
  • when k is anything different, then the lines will be parallel, so no solutions
You might be interested in
Question is DOWN↓ PLS ANSWER I WILL MARK BRAINLIEST.....
Sonja [21]

Answer: Anita's

Step-by-step explanation:

Anita's shape would have the longest sides because she only has 4 total sides, while the others have 5, 6, and 10

This means that if the total perimeter for each of the shapes was 10 units,

Anita's shape would have side lengths of about 2.5 units while the others would have side lengths of 2, 1.6, and 1 units.

This means Anita's shape has the longest sides

5 0
2 years ago
Given a soda can with a volume of 36 and a diameter of 4, what is the volume of a cone that fits perfectly inside the soda can?
Tomtit [17]
First we need to find the heigh of the soda can be rearanging the volume formula, V = pi * r^2* h. We can make that h =  \frac{V}{pi * r^2} We know that V is 36 and radius is half of the diameter, so radius is 2. h =  \frac{36}{pi * 2^2}
h =  \frac{36}{pi * 4}
h = 2.87

Now, we can use the height to figure out the volume of a cone. The volume of a cone is V = pi * r^2 *  \frac{h}{3}
R is 2 again and h is 2.87
V = pi * 2^2 *  \frac{2.87}{3}
pi * 4 * .96
12.56*.96 = 12.0576
So a cone with a volume of 12.0576 is the largest that will fit into the soda can
5 0
3 years ago
Read 2 more answers
What is the greatest common factor of 21 and 65
love history [14]

Answer:

1

Step-by-step explanation:

21 = 3*7

65 = 5*13

CGF: to find the greatest common factor, multiply those factors both numbers have in common

GCF :1  since there are no factors in common

7 0
3 years ago
Read 2 more answers
Which is not an equation of the line going through (6,7) and (2,-1)
Alex787 [66]

Answer:

c

Step-by-step explanation:

cause ik

5 0
3 years ago
How does value of a affect the<br> parabola?
Kazeer [188]

The parabola appears wider when |a| >1, the parabola appears thinner

When a is positive, the parabola opens upwards, but when a is negative parabola opens downwards

Step-by-step explanation:

brainliest?

8 0
3 years ago
Other questions:
  • Find the height of an equilateral triangle whose side measures 56 cm​
    12·2 answers
  • The semicircle shown at left has center X XX and diameter W Z ‾ ​WZ ​ ​​ start overline, W, Z, end overline. The radius X Y ‾ ​X
    7·1 answer
  • Mrs.smith has 12 times as many markers as colored pencils.the total number of markers and colored pencils is 78.how many markers
    14·1 answer
  • Write these numbers in order of size.Start with the smallest number.<br><br>1/2 , 2/3 , 2/5 , 3/4
    12·1 answer
  • Last year, there were 381 students at Woodland Middle School. This year, there are 419 students. What is the percent of change?
    5·1 answer
  • Does anyone know how to do this?
    7·1 answer
  • A class trip to a beach has been planned for your senior trip. The lifeguard is only on duty when the temperature is between 70
    9·1 answer
  • Plz help me with this :(
    5·1 answer
  • BROOOOOOOOOOOOOOO HELPPPPPPPPP
    6·1 answer
  • What is n if the equation is
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!