In order to solve it we have to make two equations for Tony and Ray. But first we have to appeal to the formula : Distance = Speed*Time. Since we have two speeds we can match minimum speed and aximum speed with x and y respectively. So, now we can make an equation for both guys:
2x+3.5y=355 for Tony
2x+3y=320 For Ray
Then substracting : the Rae's equation from Tony's one in order to solve both equations.
You get 5y=35 solve for Y which is 70.
The next step is plug the value you have obtained into any equation to find a solution for x.
Let's take this one :
2x+3(70)=320
x=55
Do hope you will find it helpful!
Answer:
Answer: (2a - 5 + b)5
Answer: 10 x (a - 2.5 + 0.5b)
Answer: (-2a + 5 - b) ⋅ (-5)
The equation of the line in its generic form is:
y = mx + b
Where,
m = (y2-y1) / (x2-x1)
For (-1, 3) and (0, 1):
We look for the value of m:
m = (1-3) / (0 - (- 1))
m = (- 2) / (0 + 1)
m = -2
We look for the value of b:
1 = m (0) + b
b = 1
The line is:
y = -2x + 1
For (1, 4) and (0, 2):
We look for the value of m:
m = (2-4) / (0-1)
m = (- 2) / (- 1)
m = 2
We look for the value of b:
2 = m (0) + b
b = 2
The line is:
y = 2x + 2
The system of equations is:
y = -2x + 1
y = 2x + 2
Answer:
the system has one solution
Answer:
17 weeks
Step-by-step explanation:
add 77 and 42 then divide by 7