The correct question is
Part A: Explain why the x-coordinates of the points where the graphs of the equations y = 4−x and y = 8-x^-1 intersect are the solutions of the equation 4−x = 8-x^-1<span>.
Part B: Make tables to find the solution to 4−x = </span>8-x^-1<span>. Take the integer values of x between −3 and 3.
Part C: How can you solve the equation 4−x = </span>8-x^-1 graphically?
Part A. We have two equations: y = 4-x and y = 8-x^-1
Given two simultaneous equations that are both to be true, then the solution is the points where the lines cross. The intersection is where the two equations are equal. Therefore the solution that works for both equations is when
4-x = 8-x^-1
This is where the two graphs will cross and that is the common point that satisfies both equations.
Part B
see the attached table
the table shows that one of the solutions is in the interval [-1,1]
Part C To solve graphically the equation 4-x = 8-x^-1
We would graph both equations: y = 4-x and y = 8-x^-1
The point on the graph where the lines cross is the solution to the system of equations.
using a graph tool
see the attached figure N 2
the solutions are the points
(-4.24,8.24)
(0.24,3.76)
3^2 + 3 / 3
3^2 = 9
9 + 3 = 12
12/3 = 4
Hope this helps!!!
<span>For problem 8:
sin A/a sinB/b = sinC/c
so sin50/15 = sinB/12
0.766/15 =sinB/12
0.051066 = sin B/12
sin B = 0.6128
B = 37.79 degrees
sum of angles must equal 180 deg therefore C = 180-50-37.79 = 92.21 degrees and .766/15 = sin92.21/c
.051066= 0.99925/c
c = .99925/0.051066 = 19.567
Problems 9 and 10 can also be done with the same method as problem 8.
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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A) Sale value = 48
Profit on the total cost = 20% = 0.20
=> Total cost + 0.20 total cost = Sale value
=> 1.20 total cost = 48
=> total cost = 48 / 1.20
=> total cost = 40
B) Cost of the gloves = 4
=> Cost of the skirt = total cost - cost of the gloves
=> Cost of the skirt = 40 - 4 = 36
C) Price of the skirt = total value - price of the gloves
Total value = 48
Price of the gloves = cost of the gloves + margin
margin of the gloves = 100% on the cost = cost
Price of the gloves = cost of the gloves * 2
Price of the gloves = 4 * 2 = 8
=> Price of the skirt = 48 - 8 = 40
D) Profit on the skirt = price of the skirt / cost of the skirt = 40 / 36 = 1.1111
Profit % = 11,11 %
Angles in a line = 180
180-165 = 15 degrees
15 + 45 + ? = 180
60 + ? = 180
? = 120