Answer:
2x = 10
Step-by-step explanation:
7 + 3x = 22
-7 -7
Subtract 7 from both sides (you are trying to get the variable alone, and to do that, you have to get every other number to 0. <em>7 - 7 = 0</em>. BUT, whatever you do, you have to do to both sides.)
3x = 15
/3 /3
Divide both sides by three to get the variable alone.
x = 5
Now, plug in the value of x to the second equation and solve.
2(5) = ? --> 10
Answer:
The number is 4.
Step-by-step explanation:
The difference of twice a number and 12 is 2x - 12.
Multiplying by 5 gives 5(2x - 12)
So 5(2x - 12) = -20
Solving for x
10x - 60 = -20
10x = -20 + 60 = 40
x = 40/10
x = 4.
Answer:
12 days
Step-by-step explanation:
Set up an equation with y = mx + b, where m is the rate and b is the y-intercept (starting value)
Let x represent how many days it takes and y represent how many pages he read:
445 = 24x + 157
Solve for x:
288 = 24x
12 = x
So, it will take him 12 days to finish the book
Answer:
approximately 92.8 miles
Step-by-step explanation:
Answer:
Row ships
Step-by-step explanation:
They helped because a lot of travel took place on the Mediterranean Sea which was a massive body of water that led to the coasts of trading locations.
