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Answer:
The value of given expression is 3.
Step-by-step explanation:
The given expression is
According to the rule of addition and subtraction,
It means,
By using this rule we get,
Therefore the value of given expression is 3.
Answer:
27
Step-by-step explanation:
PEMDAS
That is the order that you should solve complex equations
You first do equations in Parentheses
Then exponents
Then Multiplication or Division (whichever comes first in the equation)
Then Addition or Subtraction (again, whichever comes first in the equation)
So we first do the equation in parentheses, 7 - 5
7 - 5 = 2
Then we do the exponent (to the power of 2)
2 to the power of 2 is 4 (fun fact. 2 + 2 is the only equation that is the same in addition form and multiplication form)
Next, we multiply 4 by 6
4 x 6 = 24
And finally addition
3 + 24 = 27
The number 100,000 (one hundred thousand) has five zeros. So 5 should be the exponent over 10.
In other words, 10^5 = 100,000
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A more formal way to find the exponent is to use logs. Specifically use log base 10. Many calculators use base 10 by default.
Type in "log(100000)" without quotes and the result will be 5
So log(100000) = 5 helping confirm that 10^5 = 100000.
