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
makvit [3.9K]
2 years ago
5

Solve the system graphically 1. x-2y=6 and 3x+2y=-6 2. x-y=0 and 2x+3y=-5

Mathematics
1 answer:
zysi [14]2 years ago
3 0

Step-by-step explanation:

1)The given equations are:

x − 2y = 6 ...(i)

3x − 6y = 0 ...(ii)

Putting x = 0 in equation (i) we get

=> 0 - 2y = 6

=> y = -3

x = 0, y = -3

Putting y = 0 in equation (i) we get

⇒x-2×0=6

⇒x=6

x = 6, y = 0

Use the following table to draw the graph

x 0 6

y -3 0

Plotting the two points A(0, -3) and B(6,0) equaion (1) can be drawn

Graph of the equation ..(ii)

3x - 6y = 0 ...(ii)

Putting x = 0 in equation (ii) we get

⇒3×0-6y=0

=> y = 0

x = 0, y = 0

Putting x = 2 in equation (2) we get

⇒3×2-6y=0

=> y = 1

x = 2, y = 1

Use the following table to draw the graph.

x 0 2

y 0 1

Draw the graph by plotting the two points O(0,0) and D(2,1) from table

We see that the two lines are parallel, so they won’t intersect

Hence there is no solution

2)

You might be interested in
The ages of the members of a gym have a mean of 4747 years and a standard deviation of 1111 years. what can you conclude from​ c
Bond [772]

Chebyshev came up with the limits on how much or how many of the data must lie close to the mean. In specific for any positive k, the proportion of the data that lies within k standard deviations of the mean is at least: <span>

1 - 1/k² 

<span>In this problem  the mean is 47 yrs therefore:

(47 – 17.3) = 29.7 = (76.7 - 47) </span></span>

The value of k is calculated using the formula:<span>

29.7 / 11 = 2.7 = k</span>

So the % of gym members aged between 19.4 and 76.6 is: <span>

1 - 1 / (2.6)² = 0.863 = 86.3 %</span>

 

<span>Therefore 86.3% of the gym members are aged between 19.4 and 76.6</span>

5 0
3 years ago
Assuming A = dominant allele that produces red-eye, a = recessive allele that produces sepia eye, B = dominant allele that produ
AURORKA [14]

Answer:

25% of probabilities

Step-by-step explanation:

A= red eye

a=sepia eye

B=longwing

b=apterous

         AB         aB

Ab     AABb     AaBb

ab      AaBb     aaBb

AABb=25%

AaBb=25%

Ab= 25%

aaBb=25%

aaBb= sepia eye with longwig

4 0
2 years ago
Need help with a couple of geometry word problems. Giving 100 points, tysm if you help :)
dlinn [17]

Answer:

Hope it helps

Step-by-step explanation:

1: B

2: B

3: D

4: C

5: A

6 0
2 years ago
5. Solve the equation z^2 + 4z - 9 = 0 by completing the square.
Luba_88 [7]

Answer:

A. Z = 2 + N13

Step-by-step explanation:

Let's solve your equation step-by-step.

0=z2+4z−9

Step 1: Subtract z^2+4z-9 from both sides.

0−(z2+4z−9)=z2+4z−9−(z2+4z−9)

−z2−4z+9=0

For this equation: a=-1, b=-4, c=9

−1z2+−4z+9=0

Step 2: Use quadratic formula with a=-1, b=-4, c=9.

z=

−b±√b2−4ac

2a

z=

−(−4)±√(−4)2−4(−1)(9)

2(−1)

z=

4±√52

−2

z=−2−√13 or z=−2+√13

8 0
2 years ago
Find the value of x and the value of y for which (x,23) and (18,y) ate the points on the graph y=0.5x+15
shutvik [7]

Answer:

x=16; y=24

Step-by-step explanation:

for (x,23), 23=0.5x+15

x=16

for (18xy), y=0.5*18+15=24

8 0
3 years ago
Other questions:
  • Find an explicit rule for the nth term of a geometric sequence where the second and fifth terms are -12 and 768, respectively
    14·2 answers
  • HELP!!!!!
    8·1 answer
  • During a basketball game, Jeremy scored triple the number of points as Donovan. Kolby scored double the number of points as Dono
    6·1 answer
  • Round 425.919 to the nearest whole number
    15·2 answers
  • HELP ASAP PLZZZZ
    11·1 answer
  • You are in charge of creating a billboard advertisement that is 16 feet long and 8 feet tall. You make a scale drawing that is 3
    10·1 answer
  • What is the surface area of 20in 7in and 15in​
    13·1 answer
  • Simultaneous equations 5x-4y=19<br> X+2y=8
    13·1 answer
  • The balance of Susu's savings account can be represented by the variable b. The inequality describing her balance is b greater-t
    8·2 answers
  • On a coordinate plane, line D F goes through points (negative 1, negative 3) and (2, 3). Point G is at (negative 4, negative 4).
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!