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
Paul [167]
3 years ago
5

Help please. Thanks in advance

Mathematics
1 answer:
anygoal [31]3 years ago
6 0
Since they want only the coordinates of the vertices. You only care about where the lines intersect, the greater than, less than signs are irrelevant.

Get each equation in 'y=mx+b' form
1)  y = -x + 9
2)  y = 2x-21
3)  y = -4x +15

Now you can set any 2 equations equal to each other and solve for 'x'.
This will be the 'x' coordinate of the point where the 2 lines intersect.
You need 3 points, so you will need 3 different sets of 2 equations:

1) = 2)
2x -21 = -x+9
3x = 30
x = 10  -----> y = -(10)+9 = -1


1) = 3)
-x+9 = -4x+15
3x = 6
x = 2  -------> y = -(2) + 9 = 7

2) = 3)
2x - 21 = -4x+15
6x = 36
x = 6  ---------> y = 2(6) -21 = -9

Therefore the 3 intersecting points are:
(10,-1)
(2, 7)
(6, -9)
You might be interested in
a student found the slope of a line that passes through the points (1,14) and (3,4) to be 5. what mistake did she make?
mariarad [96]
x_{1}=1
x_{2}= 3
y_{1} =14
y_{2}=4
Slope= \frac{rise}{run} = \frac{ y_{2} - y_{1} }{ x_{2} - x_{1} } = \frac{4-14}{3-1} = \frac{-10}{2} =-5


answer: The student flipped the y values
3 0
3 years ago
Need Help! 10 points!
larisa86 [58]

The answer is 1680. To get this you do 8*7*6*5 because there are 8 options for the first character, and then you can repeat that for the second one with 7, 6, and 5

6 0
3 years ago
Can someone help me with this please.
Lynna [10]

Answer: Rebate applied AFTER the discount

Step-by-step explanation:

Because the rebate value stays the same no matter what, but the discount doesn't.

4 0
3 years ago
Armando found the volume of the figure below by using the steps shown.
Gnesinka [82]

Answer:

Armando use the wrong demensions for the triangular prism?

Step-by-step explanation:

The height is actually 8 inches.

5 0
3 years ago
Read 2 more answers
How to find the surface area
Stolb23 [73]

Answer:

158 in²

Step-by-step explanation:

<u>Surface area</u>

A = 2·(l·w + l·h + w·h)

= 2·(3in·8in + 8in·5in + 3in·5in)

= 2·(24in² + 40in² + 15in²)

= 2·(79in²)

= 158 in²

al3xis

8 0
3 years ago
Other questions:
  • A coin and a normal dice is rolled. how many possible outcomes are there
    10·1 answer
  • Which are partial products for 89 × 25? There are two answers.
    9·1 answer
  • 6y-3g+2y-4g???????????
    15·1 answer
  • Use compatible numbers to find two estimate 478÷12=
    14·2 answers
  • Brock exercises every day. The function E = 15m + 5 represents the number of sit-ups he can do in m minutes. After drinking a ne
    15·1 answer
  • 16 divided by 387<br> Please Help!
    5·2 answers
  • What is the value of x?
    13·1 answer
  • Kkfkfjfkfkfkfkfkfkfkrkri
    10·2 answers
  • Which relation is a function?
    10·1 answer
  • The probability that a vehicle will change lanes while making a turn is 55%. Suppose a random sample of 7 vehicles are observed
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!