Answer:
x=7 so there is one solution
Step-by-step explanation:
5x-(7x-1)=-3x+8
Distribute the minus sign
5x -7x +1 = -3x+8
Combine like terms
-2x +1 = -3x+8
Add 3x to each side
-2x+3x+1 = -3x+3x+8
x+1 = 8
Subtract 1 from each side
x+1-1=8-1
x=7
15 miles = 2 minutes
1 hour = 60 minutes
60 ÷ 2 = 30
30 × 15 = 450
Answer = 450 miles in 1 hour
Hope this helped :)
Answer:
Again... <em>m</em> = 2, and <em>c</em> = 1
Answer:
Option b
Explanation:
To solve this problem you need to plug in the values provided and determine if they make the equation true.
Step 1 - Plug in the values for x and y given in option a. Determine if all values make the equation true.
y = 3x + 1
1 = 3(0) + 1
1 = 1 {true}
y = 3x + 1
9 = 3(2) + 1
9 = 7 {not true}
Since the second ordered pair does not make the equation true, this is not the correct answer.
Step 2 - Plug in the values for x and y given in option b. Determine if all values make the equation true.
y = 3x + 1
1 = 3(0) + 1
1 = 1 {true}
y = 3x + 1
7 = 3(2) + 1
7 = 7 {true}
y = 3x + 1
19 = 3(6) + 1
19 = 19 {true}
Since all of the ordered pairs given in Option b make the equation true, this is the correct answer. To double check, you can do the same process for option c to make sure it is not true.
Step 3 - (Optional step) Plug in the values for x and y given in option c. Determine if all values make the equation true.
y = 3x + 1
-1 = 3(0) + 1
-1 = 1 {not true}
Since the first ordered pair given does not make the equation true, this is not the correct answer.
