Distance÷time
440÷8= 55
Therefore he needs to drive at the speed of 55 miles/hour
Combining the operations
The allowed operations are:
Add the same amount to both sides (either x's or ones)
Subtract the same amount from both sides (either x's or ones)
Multiply both sides by the same number (but not by zero)
Divide both sides by the same number (but not by zero)
(There are others, too, but they are not needed in simple equations.)
The goal is to FIRST add and subtract until we have ONLY x's (blocks) on one side and ONLY ones (circles) on the other. Then, if you have more than one block, you need to divide so as to arrive to the situation with only one block on the one side, which is the solved equation!
Answer:
Step-by-step explanation:
The given inequality is 3x-2>4 or
We group similar terms to obtain: 3x>4+2 or
Simplify to get:
3x>6 or
x>2 or
This implies that the solution set is all real numbers.
The solution in interval notation is
Answer:
Step-by-step explanation:
You would do 21,000×0.20, which equals 4,200. Since 4,200 equals 20% of 21,000, then you would do 21,000-4,200, which equals 16,800. So the car is worth $16,800 dollars this year.
Answer:
ok
Step-by-step explanation:
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