The above equation is invalid. It is not equal.
-10 = -14v + 14v
-14v + 14v = 0
-10 = 0 This is not equal. There is no solution. Thus, the equation is invalid.
<span>Part
A- Explain why the x-coordinates of the points where the graphs of the
equations y=2^-x and y=8^x+4 intersect are the solutions of the equation
2^-x=8^x+4
Because the intersection point has the a unique pair of (x,y) coordinates; such coordinates x,y belong to both equations.
Part B- Make tables to find the solution to 2^-x = 8^x+4. Take the integer values of x between -3 and 3.
x 2^ (-x) 8^(x + 4) <------ this is how I understand the right side
- 3 2^3 = 8 8^(1) = 8
- 2 2^2 = 4 8^(2) = 64
- 1 2^1 = 2 8^(3) = 512
0 2^0 = 1 8^(4) = 4,096
=> solution x = - 3
You can continue filling the table for x =1, x = 2 and x = 3, but the solution is already stated x = - 3.
Part C- How can you solve the equation 2^-x=8^x+4 graphically?
Draw the graphs of both equation is the same coordinate system and the solution will be the point where the two curves intersect each other.
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The given formula is
Therefore
Given:
C = $25,000
V = $12,000
t = 4.5 years
C/V = 0.48
1/t = 0.2222
Therefore
Answer: 15% (nearest integer)
Answer:
5mph
Step-by-step explanation:
Let speed of boat in still water is s.
Distance proportional to speed
90/10 = (s+ 4)/(s - 4)
=> 9s - 36 = s + 4
=> 8s = 40
=> s= 5 mph
:-)
Answer:
2x - 8
Step-by-step explanation:
Product of two and a number x
⇒ 2 multiply by x
⇒ 2x
Eight less than 2x
⇒ Take away 8 from 2x
⇒ 2x - 8
