Answer:
C 2 hours
Step-by-step explanation:
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Answer:
Let's call the side of square b x. Therefore, the side of square a is 0.5x, making its area 0.25x² and the area of square b is x². This means that the percentage is 25%.
Answer:
Option B is correct
No solution
Step-by-step explanation:
Given the system of equation:
......[1]
......[2]
We can write equation [2] as
y =8-x
Substitute this in [1] we have;
Using distributive property:
Combine like terms;
false.
⇒ the system of equations does not have any solution.
Using Graphing calculator:
You can see the the graph of the system of equations as shown below:
The graph of the lines do not intersect, so the graphs are parallel and there is no solution.
Answer:
60 days
Step-by-step explanation:
To find when the two actions will happen together again, we just need to find the least common multiple of 12 and 30.
To do this, first we factor them in prime numbers:
12 = 2 * 2 * 3
30 = 2 * 3 * 5
Now we choose one of them and add the prime factors that the number chosen does not have from the other.
If we choose 30, we should add a number 2, so 2 * 30 = 60
If we choose 12, we should add a number 5, so 12 * 5 = 60
So after 60 days Dexter will mow his lawn and wash the windows on the same day.
Answer: FIRST OPTION
Step-by-step explanation:
You must keep on mind that, according the exponents properties, when you multiply two powers with equal base, you must add the exponents.
Then:
- Apply the distributive property as you can see below:
-Add like terms, then you obtain: