Answer:
(4.2x100).(5.7x100) = 239.400
Step-by-step explanation:
We need to determine the product of (4.2x100).(5.7x100).
We know that when two numbers are multiplied together, the product is the same regardless of the order of the multiplicands. For that reason, we can multiply all together, and the result will be the same regardless of the order of the multiplicands:
Then:
(4.2x100).(5.7x100) = 4.2x100x5.7x100 = 420x570= 239.400
The answer to your question is x = -3
Well -x is the opposite of x
so i think that it makes the lines perpendicular
Answer:
addition and multiplication
Step-by-step explanation:
The only operations that can use the commutative and associative properties are addition and multiplication.
The house is 7 years old right now.
<h3>What are word problems in algebraic equations?</h3>
Word problems leading to algebraic equations are real-life problems that can be interpreted and solved with the use of variables and arithmetic operations.
From the information given:
- Let us assume that the age of the house is (m)
Now, the amount paid on the mortgage is:
m + 21
This is equal to 4 times as old as it is now;
i.e.
m + 21 = 4m
m- 4m = -21
-3m = -21
m = -21/-3
m = 7
Therefore, we can conclude that the house is 7 years old.
Learn more about word problems in the algebraic equations here:
brainly.com/question/21405634
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